This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.
An underappreciated surreality of climate change is the incredible sense of déjà vu: Every heat wave seems to be the new worst; every hurricane season seems to break records. 

The wildfires sweeping France and Spain this week are the latest entries in that grim catalog. They are the largest blazes either country has faced in modern history — and they could worsen as temperatures spike above 100 degrees later this week.

Already, France has evacuated more than 250,000 people from their homes in the southwest, outside Bordeaux. Spain, meanwhile, ordered some 100,000 residents to relocate as fires swept rural and wooded areas to the west of Madrid. 

Both countries have experience with wildfires. What’s new, however, is the scale of the fires: Wildfire season is lasting longer across Europe, and the blazes are burning larger areas. Climate scientists say that a series of record heat waves this summer — there’s that apocalypse déjà vu again! — helped make this year’s wildfire season particularly brutal in Spain and France.

Dry hot European summer

Every continent on Earth is getting warmer. But Europe is riding the express bus. The region has seen its average temperatures rise twice as quickly as the global average over the past 30 years, according to the European Union’s Earth Observation Programme. 

This dubious honor begs a question, however: Why does “global warming” vary between regions if it is, ya know…global? 

The answer relates to local geography and weather patterns. In broad strokes, the same climate story is playing out everywhere: When humans burn fossil fuels, they release carbon dioxide and other greenhouse gases into the atmosphere. Those gases make it harder for heat to escape into space.

But some places warm faster than others. Land heats up more quickly than oceans, for instance — so coastal waters can provide a bit of insulation. 

Local weather patterns matter, too. One reason Europe has been hit especially hard is that air currents have increasingly allowed hot air to stall over the continent, fueling intense heat waves like the ones we’ve seen this summer. 

Ironically, another major reason for Europe’s rapid warming springs from an environmental victory: In the 1980s, European countries cracked down on sulfur pollution from coal plants and factories. That pollution had been reflecting sunlight back into space and slightly cooling the continent. But as the pollution disappeared, more sunlight reached the ground — and revealed the warming that pollution had previously masked. 

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➨ It is possible to wear Meta’s “pervert glasses” in a non-creepy way. Namely, and respectfully: by oneself. The polarizing $300 smartglasses come equipped with dual cameras, multiple microphones, and a whole lot of well-deserved cultural baggage. 

Before you go…

• Did you know…that, in the US, the age-adjusted death rate from cardiovascular disease has fallen by three-quarters since 1950? It’s one of several pretty incredible signs that modern medicine is trouncing heart disease.
• Today’s trivia: What is the name of the Dutch cheese typically coated in red wax? (You can find this and other brain puzzles in Vox’s daily crossword. Look for the answer in tomorrow’s edition.)
• Yesterday’s trivia: Yesterday we asked you for the singer of the 1988 song “Orinoco Flow.” That would be Enya, the reclusive New Age artist who became one of Ireland’s wealthiest and most successful musicians without ever going on tour. 

Last week, the Trump administration announced a landmark civilian nuclear cooperation agreement with Saudi Arabia. The deal would allow the kingdom to develop nuclear power using American technology and could eventually pave the way for uranium enrichment on Saudi soil. But the agreement must first undergo congressional review — and survive President Donald Trump’s social media feed.

When the Trump administration announced its agreement, it made no mention of the possibility of normalizing diplomatic relations between Saudi Arabia and Israel. But that omission and the possibility that Saudi Arabia could eventually enrich uranium alarmed Israelis — and Trump quickly threw in both conditions in a Truth Social post.

The chaos around the agreement comes as Israeli Prime Minister Benjamin Netanyahu heads to Washington, DC, this week to meet with Trump. The Saudi deal — as well as growing friction over differences on the goals and trajectory of the renewed US war with Iran and frustration in Washington over Israeli military operations in southern Lebanon — will undoubtedly be topics.

Today, Explained co-host Sean Rameswame spoke with Michael Koplow, chief policy officer at the Israel Policy Forum, about the relationship between the two countries and its leaders ahead of Netanyahu’s visit. 

Below is an excerpt of the conversation, edited for length and clarity. There’s much more in the full podcast, so listen to Today, Explained wherever you get podcasts, including Apple Podcasts, Pandora, and Spotify.

What are we expecting from the meeting between Prime Minister Netanyahu and President Trump?

I suspect this will be among the most tense meetings that they have had because there are a number of issues on the table where President Trump and Prime Minister Netanyahu are on different pages. The issue that they used to be on the same page about was Iran, and I don’t think that is the case anymore. 

As we’ve seen the Iran war unfold, the Israeli view is still the view that they had at the outset of the war, which is that this is necessary to deal with Iran’s nuclear program, with its ballistic missiles, with its proxies. And ultimately what the Israelis wanted to see, and what they still want to see, is a different regime in Iran. President Trump may still share those goals, but it’s pretty clear that, as the war has not gone the way he anticipated, he’s looking for an exit strategy and his main focus is the Strait of Hormuz, which is not something that the Israelis care about at all. 

I think at this point, when Prime Minister Netanyahu arrives at the White House, he’s probably going to try to convince the president that the original goal should be on the table, that the US and Israel should keep going, and President Trump seems to have a different view of things.

And now we have this new deal with Saudi Arabia. Was Israel taken by surprise by the deal? 

It absolutely took Israel by surprise. When the deal was announced on Wednesday, it was a deal to provide Saudi Arabia with nuclear power and nuclear infrastructure. There was no mention of Israel. There was no mention of normalization. There was no mention of anything outside of the bounds of a nuclear agreement. 

President Trump on Thursday put out his Truth Social where he said that the deal is absolutely contingent on Saudi Arabia joining the Abraham Accords. And what’s curious about that is that when the deal was announced, there was no mention of it, and the deal was actually signed. So either the president is intending to change the terms of the deal after it’s been signed, or he’s willing to back out of it if this new condition is not met. 

Or, and I suspect that this is the actual answer, he will secure some sort of commitment from the Saudis to examine joining the Abraham Accords at some point down the road when Israel has met a number of conditions and there’s been progress toward a Palestinian state. And if that is how it unfolds, it will leave the Israelis behind. And I think this comes as a pretty big shock to [Israel] given that President Trump’s previous policy was that a deal between the US and Saudi Arabia would involve normalization.

Was Netanyahu himself surprised by this deal? 

I think he must have been surprised by this deal. It is true that Trump and Netanyahu have seemed to have had a very cushy relationship, not only during this term, but during President Trump’s first term as well. But it’s not a relationship of equals.

We’ve seen President Trump — particularly over the past few months, I think in response to criticism here in the United States over the role that Israel and the role that the prime minister may have had in convincing President Trump to go to war — repeatedly talk about the fact that he is in charge, that Prime Minister Netanyahu is going to do what he says, that he is the decider and Prime Minister Netanyahu is not. 

I do think they have a good relationship, but President Trump, at least publicly, seems to be signaling that he is in charge and he wants everybody to know that. I think that Prime Minister Netanyahu undoubtedly is feeling some stress in this relationship. And when he shows up here tomorrow, he’s going to do whatever he can to try and repair any rifts that there are.

Israel wanted this war, but hates this deal that the president may very likely complete with Saudi Arabia. Did they miscalculate somewhere in here? 

I think the Israelis have miscalculated in a number of ways. And the biggest is that consistently since 2017 or 2018, you hear Israeli officials, political officials, security officials, even ordinary Israelis, talk routinely about President Trump being the best friend that Israel has ever had and exhibiting a faith in President Trump that he will never do anything that will hang Israel out to dry. 

And a lot of what they’ve done has proceeded on that assumption. And even though everybody is aware of President Trump’s transactional nature, even though everybody is aware that he is relatively volatile, that he slips on policy issues all the time, the Israelis had this faith that they would always be an exception to that rule. And I think what we’re seeing is that they’re not necessarily an exception to that rule. 

And it’s important to stress that when it comes to this Saudi nuclear deal, the problem for the Israelis is not just that it was signed without any hint of normalization between Israel and Saudi Arabia being part of the deal itself. It may open the door for countries that have signed more restrictive agreements in the region, like the UAE, to do the same. And ultimately, all of this is a bet that the trajectory of Saudi Arabia is going to continue, that it’s going to continue modernizing, continue becoming more moderate and pragmatic, and continue improving relations with Israel. 

If that’s not the case, once you’ve handed the Saudis a nuclear program, that’s irreversible. People shouldn’t forget that Iran’s nuclear program started off as a civilian nuclear program that the United States provided for it under the days of the Shah. So for Israelis, the normalization part of this is absolutely worrisome, but the deal itself is problematic too. And I think that’s where the Israelis are feeling panicked.

This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.

America formally eradicated measles in the year 2000. But like many other remnants of the 1990s — flip phones, CDs, baggy pants — measles is now regrettably and undeniably back. 

More than 2,300 Americans have come down with measles so far this year — the highest number since 1992. New data from the Centers for Disease Control and Prevention shows that there’ve been more cases in the country in the last two years than in the 24 years prior. 

Many of the cases trace back to large outbreaks in South Carolina, Utah, Virginia, and Pennsylvania, some of which have ended. But the underlying problem is both much broader and much trickier to address: As more parents pass on routine childhood vaccinations for their kids, these once-eradicated viruses have more chances to spread.

For measles, which is incredibly — almost frightfully — contagious, 95 percent of people in any given community must be immune to stop its transmission. But today, only 28 percent of US counties vaccinate enough of their kindergarteners to meet that threshold. 

Another record-setting year for measles

Lower vaccination rates are, in large part, a result of political polarization, misinformation, and declining trust in health authorities and institutions. But there’s another, more ironic reason for measles’ resurgence: We did such a good job getting rid of it.

As late as the 1950s, virtually every American child contracted measles before age 16. Roughly 48,000 patients were hospitalized each year with measles, which is among the most contagious infections known to humanity. 

But the development of a highly effective vaccine in the 1960s, and a series of aggressive public immunization campaigns in the decades after that, all but eradicated a once-common childhood illness. The federal government poured millions of dollars into vaccination programs, especially for low-income kids. Everyone from Michael Jackson to the Teenage Mutant Ninja Turtles championed measles immunization. 

All that campaigning worked. By the end of the 1990s, more than 90 percent of Americans had received the measles vaccine, and a similar percentage agreed that it was important to vaccinate children. As a result, most people born in the last 40 years have no firsthand experience of how dangerous measles is.

“We’ve done too good of a job,” one doctor joked to Vox last December. In other words, ironically, America’s success at vaccinating against measles … has made Americans complacent about measles vaccination. 

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➨ Go with your gut. The hashtag #GutTok has over 6 billion views on TikTok, and viral trends that promise to “hack your gut” through miracle products and cleanses are all the rage. But you don’t need an influencer-endorsed supplement for digestive wellness. Instead, actual experts recommend basic lifestyle steps like eating a high-fiber diet and reducing stress. 

Before you go…

• Did you know…that there are more endangered species in California than in any other US state? But more surprising is the runner-up: After California, Alabama has the most endangered species. 
• Today’s trivia: Which Irish musician sings the song “Orinoco Flow”? (You can find this and other brain puzzles in Vox’s daily crossword. Look for the answer in tomorrow’s edition.)
• Yesterday’s trivia: On Friday we asked you for the four-letter university located in Athens. That would be Ohio. But there are more than two dozen Athenses in the US, and a rival Athens is also home to the University of Georgia. 

This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.

During his campaign to become mayor of New York, Zohran Mamdani famously vowed that he’d arrest Israeli Prime Minister Benjamin Netanyahu the next time he visited the Big Apple. 

This week, Netanyahu essentially called his bluff. He’s expected to address the United Nations in September. And after a whole lot of hemming, and hawing, and hedging, Mamdani admitted in a video Tuesday night that he does not actually have the legal authority to arrest a foreign dignitary on US soil. 

The retreat is not surprising to legal experts, who had long questioned how Mamdani would pull this particular promise off. In November 2024, the International Criminal Court — a tribunal recognized by 125 countries, not including Israel, China, Russia, or the US — did issue an arrest warrant for Netanyahu on charges of starvation, murder, persecution, and intentionally directing attacks against civilians.

But the US does not recognize the ICC’s jurisdiction. And even if it did, the job of executing its warrants would presumably not fall to New York City cops. So, why did Mamdani suggest he’d arrest Netanyahu when he actually knew he could not?

The end of the pro-Israel consensus

Mamdani’s allies argue that the principle here mattered, that the mayor needed to issue some kind of denunciation, even if he couldn’t act. But there’s another, more cynical read here, too: For Democrats, critiquing Israel is good politics. 

This is a seismic, generational shift, with far-ranging implications for both Democrats and US foreign policy. The party’s left flank has criticized Israel for years, but older and more moderate Dems only soured on Israel recently. 

“A few months after October 7, younger and progressive Democrats overwhelmingly took the opinion that Israel was committing a genocide,” said Hamid Bendaas, of the Institute for Middle East Understanding, a pro-Palestinian advocacy group. “But there were still elements of the Democratic Party — people watching MSNBC or NPR — that weren’t convinced.”

For many of these voters, the turning point only came after President Donald Trump took office again. Severe famine swept across Gaza last summer — the consequence of ongoing conflict and Israeli restrictions on food and aid shipments. Netanyahu also allied himself closely with Trump, particularly around the war in Iran. Support for Israel has consequently grown more GOP-coded, rather like Kid Rock or Bass Pro hats.

Now, even Democrats far to the right of Mamdani are looking to retool the US-Israeli relationship. Listen to Tuesday’s Today, Explained podcast episode for even more about the shift (!).

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➨ Beat the endless scroll at its own game. Social media is compelling — and compulsive — because it hijacks your sense of curiosity. But my colleague Constance Grady has come up with a delightful (and delightfully simple) antidote: To reclaim your time, just find the thing that fascinates you even more than your feed. 

Before you go…

• Did you know…that the term “luddite” comes from a movement of skilled, 19th-century textile workers who smashed and burned automated looms?
• Today’s trivia: The city of Enid, Oklahoma, is named after a character from which Victorian literary work? (You can find this and other brain puzzles in Vox’s daily crossword. Look for the answer in tomorrow’s edition.)
• Yesterday’s trivia: Yesterday I messed up! I told you that there were 23 countries in Latin America, when there are in fact 23 countries in North America. (I think we can all agree that the latter makes for more surprising trivia.) I also asked you for the name of the Eminem song that gave us the slang term for an obsessive admirer. That would be “Stan.” It also samples Dido. 

This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.

A yet-unreleased, cutting-edge AI model escaped its test environment last week, connecting to the internet and murdering its creators in a bid for self-determination and autonomy. 

I’m kidding, of course: That’s the plot to Westworld. (And Ex Machina, and The Matrix, and too many other sci-fi stories to list.) But on Tuesday, OpenAI did reveal that two of its models broke containment and hacked Hugging Face, a platform for AI developers, during a recent test. 

The test was designed to evaluate how good the models had gotten at finding, and exploiting, cybersecurity flaws. To do that, researchers placed the models in a tightly controlled, tightly isolated environment, called a “sandbox,” and essentially challenged them to solve a cybersecurity puzzle. 

Instead of solving it directly, however, the models identified an unknown flaw in software connected to their test environment — then used that flaw to tunnel through OpenAI’s research network until they located a computer with internet access. From there, the models (correctly!) reasoned that Hugging Face might hold the answer to their challenge. 

It’s an “unprecedented” incident, OpenAI said — and a cautionary tale. Over the past year, a growing chorus of AI researchers, cybersecurity experts, and tech executives have warned that society is unprepared for this new generation of frontier AI models. 

In the real world, of course, these models do come with guardrails. (OpenAI turned them off for the test.) But the episode still suggests that the gap between reality and science fiction is narrowing — perhaps a bit faster than you’d expect.

The (impossible?) quest for a moral AI

The Hugging Face hack is a textbook example of what AI researchers call the alignment problem: the enormous, mind-melty challenge of getting AI systems to do what you want, the way that you wanted them to do it. 

Given a task and left to their own devices, AI models will pursue that task using the most efficient means available to them. But sometimes, the most efficient means are harmful, deceitful, antisocial, or otherwise…bad. 

The Hugging Face episode is one example. Bias is another: When an Amazon hiring algorithm discriminated against female candidates, for instance, it was doing what Amazon wanted (finding candidates who resembled past hires) in a way that Amazon did not want (by penalizing resumes that included words associated with women). 

In a truly apocalyptic scenario, you could even imagine — and many sci-fi writers have imagined — AI systems killing people in the narrow, relentless, and morally indifferent pursuit of their goals. Consider an AI that’s asked to order coffee, for example, and then takes steps to ensure that no one on earth can ever stop it. 

In the interests of avoiding this dystopia, AI companies have poured billions of dollars into the project of encoding their creations with human values. But even that apparently worthwhile ambition raises thorny questions, because human values vary — and often, conflict.

Should the AI order the cheapest coffee, or the cup produced under the best labor conditions? A lot of forests are cleared to plant coffee each year; maybe the AI should nudge me toward tap water, instead. Is your inferior human brain starting to melt yet…? 

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➨ Write a little note today. By hand. With a pen. Handwriting is a disappearing art in American schools, homes, and workplaces. (The average kindergarten teacher spends only 10 minutes a week teaching handwriting, and that’s the primary grade when kids learn penmanship.) People tend to think more deeply when they’re writing than when they’re typing, one education researcher told Vox. Plus, a handwritten note has a certain charm that an email or text does not. 

Before you go…

• Did you know…that the average F1 race car driver can lift 90 pounds — wait for it — with their neck? Driving doesn’t immediately sound all that athletic, but the extreme physics of F1 racing demand extraordinary fitness.
• Today’s trivia: Which Eminem song gave us the slang term for an obsessive admirer? (You can find this and other brain puzzles in Vox’s daily crossword. Look for the answer in tomorrow’s edition.)
• Yesterday’s trivia: Yesterday we asked you for the number of countries in North America. The answer is 23. It includes Central America and the Caribbean, in addition to the big three.

Last week, House Democrats voted on an amendment that would have cut $3.3 billion in annual US military aid to Israel from a State Department funding bill. The amendment was brought to the floor by Rep. Thomas Massie, an outgoing Republican from Kentucky. It failed 314-104, but 103 Democrats — nearly half of the House Democratic caucus — supported it, signaling a significant shift in the party’s longstanding support for aid to Israel.

In 2024, a similar vote came up in the House to cut military aid to Israel. Then, just 37 House Democrats voted for the measure. Now, two years later, 103 House Democrats voted to cut funding. That shift in support was accelerated after the October 7 Hamas attacks and Israel’s subsequent military campaign in Gaza, which has killed large numbers of Palestinian civilians. The debate is also playing out in Democratic primaries across the country. In New York and Colorado, Democratic socialist candidates who have sharply criticized Israel and opposed continued US military aid recently won House primaries.

Historically, Jewish Americans have overwhelmingly identified with and voted for the Democratic Party, while Democratic lawmakers have generally supported Israel and US military assistance to the country. In 2016, the Obama administration signed a 10-year memorandum of understanding (MOU) with Israel, committing the US to seek $38 billion in military assistance for fiscal years 2019 through 2028. Congress must vote to approve this funding, so the shift in Democratic support of Israel could have real consequences.

There is still a very strong support for Israel among many House Democrats, but the shifting views are notable. House Minority Leader Hakeem Jeffries opposed the Massie amendment, arguing that it was overly broad and could jeopardize humanitarian assistance. But in a letter addressed to his House colleagues he also called for a “major reset” in US policy toward what he described as Israel’s “far-right Netanyahu government.”

Today, Explained host Sean Rameswaram spoke with Democratic Rep. Brad Schneider, who represents Illinois’s 10th Congressional District, and remains a strong supporter of Israel.

Below is an excerpt of the conversation, edited for length and clarity. There’s much more in the full podcast, so listen to Today, Explained wherever you get podcasts, including Apple Podcasts, Pandora, and Spotify. 

Can you walk us through last week’s vote? You voted against the measure to cut aid to Israel, and a lot of your colleagues obviously did not. How did that play out for you?

Growing up in the ’60s, ’70s, and for the last 65 years, I fundamentally believe that the US-Israel relationship is important. I also believe that the aspiration for peace in the Middle East, not just between Israelis and Palestinians, but broadly throughout the region, is something that is in the United States’s interest and the interest of the people in the region. So this is not a new issue to me, and it’s something I thought long and hard about. 

Tom Massie doesn’t believe any of that. His intentions with this amendment were anything but pure. It was hastily crafted and poorly written. And one of the biggest issues with it is not only does it [not] address this 10-year memorandum of understanding, something negotiated by President Obama eight years ago, but there are also two years left on the MOU. 

It was a messaging bill and nothing more, and it was a negative message. I voted no because I think if we’re going to move toward peace, we need to do so in a constructive way. A lot of my colleagues were saying we need to send a message to the Netanyahu government.

“I have to hold onto that optimism for the prospects of peace because the alternative is too dark.”

I’ve been extremely critical of this government, their failure to address the settler violence in the West Bank, the failure to plan for a day-after in Gaza following what was a horrific war. If we’re going to move towards peace, if we’re going to find a path where Israelis and Palestinians can live side by side and the region can have the peace they deserve. Because we’re not just talking about Israelis and Palestinians; there’s progress being made between Lebanon and Israel in giving Lebanon, the people of Lebanon, the liberty and freedom they all deserve. 

Can I ask you if you still take money from AIPAC? And if so, how much?

I appreciate the support I get from people who care about the issues that I advocate for. So people who are pro-Israel, pro-US-Israel relationship are likely to support me because I’m pro-US-Israel, pro-US-Israel relationship. I’m also pro-addressing gun safety and reducing gun violence in this country. So I get the support of those groups. The support I get doesn’t determine my positions. I think my positions determine who supports me. 

Has your position on Israel shifted at all since October 7th, or at any point in your political career? And if so, can you tell us how?

So my position hasn’t changed because I’ve always been committed to promoting peace between Israelis and Palestinians and finding a path where both can live together, which I believe ultimately is two states: a Jewish democratic state of Israel, and a Palestinian state living side by side. My frustration with the current Israeli government has grown and continues to grow. Every conversation I have with them, whether it’s the US ambassador to Israel, whom I’ve had the privilege of working with many times, or my meetings with Prime Minister Netanyahu. I’ve had an engagement with the prime minister going back now for almost 30 years. But in the last several years, every single conversation I have with them talks about the need to address settler violence, the need to get humanitarian aid.

One of the things that I am proud of and will say loudly and proudly is that immediately after October 7th, as the war began, my team and I worked hard to push for humanitarian aid into Gaza to do everything we could to make sure that the civilians who were always caught in the middle of any war wouldn’t suffer more than they did. And the suffering was horrific. And I did challenge Israel when they made what I’ll call ill-conceived, ill-advised, in some cases illegal decisions to deprive humanitarian relief from entering Gaza. We pushed hard, and we worked with the Egyptians to get the Rafah crossing open. We pushed the Israelis to open the Karam Shalom crossing. And to not just get aid to those crossings, but get aid into and across the territories within Gaza.

Why are you so optimistic about the situation? 

I am always going to be optimistic. I have to hold onto that optimism for the prospects of peace because the alternative is too dark. And let’s separate the issue for folks living in the region and the folks living here. And for the Israelis and Palestinians, these are two peoples who are totally traumatized — traumatized not just over the last couple of years, but for decades. So I recognize the trauma that Israelis have and are experiencing, and I recognize the trauma that the Palestinians have and are experiencing. And that’s part of what I feel is my obligation: to hold onto that optimism and speak to a better future and work to try to find ways to bring the parties on both sides of the issue together to make the hard choices and take the risk to get to a path to peace.

So the reason I’m holding onto optimism — and it’s not 24/7; I have my moments when I am down and where I feel like the hill we’re climbing is just too steep — is you take a deep breath and you dig deep, and you say, I can’t give up on hoping and working towards peace because otherwise peace is never going to happen. And I want to find people who are like-minded.

And that is not just on the Israeli side of the equation. We have to find people on the Palestinian side, and for those on the Palestinian side, we have to find Israelis. And I meet, and I spend time with them on a regular basis. They come to my office. When I’m in the region, I talk to them. We have to strengthen and empower those voices who believe that peace will only come when the Israelis see the Palestinians as a people worthy of engagement and a shared future, and the Palestinians see the Israeli as a people worthy of engagement and a shared future, and recognize that until they get there, there’s no future for either side. We’ve got to have a path where both are pointing in the same direction.

This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.

President Donald Trump seemed visibly irked when asked about his plans for Iran on Tuesday. “You don’t know anything,” he snapped at a reporter who said Iran showed no signs of deescalating. 

You have to forgive the man his vexation — he is in something of a bind. The war in Iran, never popular to begin with, has only become more of a lemon since a tenuous ceasefire collapsed earlier this month. In the two weeks since, Iran has bombarded targets across the Middle East with missiles and drone strikes. The onslaught badly damaged US bases and, just last week, killed three American soldiers’ lives.

Now Iran and its allies, metaphorically drunk on their recent successes (…alcohol is technically illegal in Iran!), appear to be revving for a new round of attacks. Iran launched strikes on Kuwait, Jordan, and Bahrain this week, reportedly targeting both US bases and civilian infrastructure. And on Monday, Yemen’s Iran-backed Houthi militia also threatened to shut down a second key waterway that could further strain global oil markets. 

The world is running out of soldiers

The latest US casualties are a grim reminder that — for all the talk of drones and precision missiles — wars are still fought by actual, human people. 

But major military powers are running short on soldiers: The US, the United Kingdom, Germany, and Japan have all recently struggled to recruit troops. And the forces driving that shortage aren’t easily reversed. 

For starters, falling birth rates and aging populations have left many countries with fewer military-age adults. Being the right age is also only half of the equation. In the US, factors including weight, drug use and physical or mental health conditions would disqualify an estimated three-quarters of young Americans from military service.

Then there’s the military’s image problem: Polls show that young people around the world are becoming less willing to fight for their respective countries. And young Americans, in particular, have more negative views of both the military and the war in Iran than do their parents or grandparents.

There is another way to fill the ranks, of course…but it isn’t popular. The US ended its draft in 1973, and most Western militaries have similarly transitioned to all-volunteer forces. If the US did ever need to restart its draft, both the politics and the logistics could prove formidable. 

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➨ Treat yourself to a froyo. The go-to dessert of my misspent 20s is apparently very much back in vogue. But this time, it’s less about the zany flavors and maximalist toppings and more about wellness buzzwords like…protein and probiotics. Hmmmm. 

Before you go…

• Did you know…that carrots don’t actually improve your vision? The myth originated as part of a World War II propaganda campaign to conceal Britain’s development of radar technology.
• Today’s trivia: How many countries are in North America? Don’t look it up — just guess! (Our daily trivia generally comes from Vox’s daily crossword, but today’s tidbit comes from my colleague Sean Rameswaram.) 
• Yesterday’s trivia: Yesterday I asked you to name the Mesoamerican civilization that spoke Nahuatl. That would be the Aztecs — though 1.5 million people in central Mexico still speak the language now.

This story appeared in Today, Explained, a daily newsletter that helps you understand the most compelling news and stories of the day. Subscribe here.

The first thing you need to know about the UK’s new prime minister is that he’s previously moonlighted as a DJ. 

Okay: probably not the first thing you needed to know. And sure: That DJ gig was for charity. 

But it still tells you a little something about Andy Burnham, who today became the UK’s seventh prime minister in 10 years. He’s widely seen as a pragmatic, affable, down-to-earth kind of guy — more Zohran Mamdani than Keir Starmer. 

As the longtime former mayor of Manchester, the UK’s second-largest city, Burnham won adoration for his focus on improving public transit and affordable housing. His vocal advocacy for England’s post-industrial cities even earned him the nickname “the King of the North.”

Burnham’s first speech as prime minister, delivered (without notes!) on Monday morning, doubled down on some of those populist themes — including the need to bring down Britain’s cost of living and address homelessness.

Political observers don’t expect Burnham’s policies to actually differ all that much from those of Starmer, his predecessor. (They’re both members of Britain’s center-left Labour Party.) And the fundamental relationship between the UK and US is also expected to stay much the same. 

Asked how he’d relate to President Donald Trump, Burnham said: “I like to think I’ve got some personality myself.” You can be the judge of that! There’s video of his 2022 DJ set.

Will Britain’s new PM reverse Brexit?

Here’s one place where Burnham does break from his predecessor: He wants Britain to rejoin the European Union in his lifetime. (Though he’s also promised not to relitigate Brexit.)

Call it a breturn or a brejoinder — it’s a tantalizing prospect for the majority of Britons, who now either have soured on their country’s 2016 vote to depart from the EU or never supported Brexit to begin with.

But undoing Britain’s break with Europe would be a monumental undertaking. First, the government would likely need a clear political mandate from British voters, either through a second referendum or a general election where a breturn figured heavily. 

Then the UK would have to negotiate its way back into the bloc…and convince all 27 member states to give it another go. Some could approve accession with parliamentary votes. But others, including France, could require national referendums of their own. 

“Countries have very different views of Britain,” one European observer told Vox last month. “There are those that still think that the EU is better off without Britain.”

One link for later

➨ Slow down time — or at least your subjective experience of it. Neuroscience research shows that both novelty and strong emotions seem to stretch time out a bit. 

Before you go…

• Did you know…that despite all the evidence to the contrary — license plates, hip-hop lyrics, etc. — a minority of American peaches are actually grown in the great state of Georgia? 
• Today’s trivia: Nahuatl is still spoken by millions of people today. But it was also the primary language of which former Mesoamerican civilization? (You can find this and other brain puzzles in Vox’s daily crossword. Look for the answer in tomorrow’s edition.)
• Friday’s trivia: On Friday, my colleague Dylan Scott asked you for a Russian name that means “holy.” That would be Oleg, as in Oleg Cassini — the Russian count turned designer who dressed former first lady Jackie Kennedy. 

Fermented food is the hottest new trend in the halls of the White House. Members of President Donald Trump’s Cabinet are reportedly walking about with jars of sauerkraut in the hopes that it will give them glowing skin and tiny waists. 

Wall Street Journal’s Liz Essley Whyte told Today, Explained co-host Sean Rameswaram that “Health Secretary Robert F. Kennedy Jr. Commerce Secretary Howard Lutnik, Transportation Secretary Sean Duffy, and Vice President JD Vance are all on this eat-a-lot-of-steak-and-sauerkraut diet.”

So, should we all be eating jars of sauerkraut? Or are ferments just the new Florsheims?

Below is an excerpt of their conversation, edited for length and clarity. There’s much more in the full podcast, so listen to Today, Explained wherever you get your podcasts, including Apple Podcasts, Pandora, and Spotify.

Is there a name for this diet?

Kennedy calls it the carnivore diet. I think people mean different things when they say that, but for him, it includes a lot of yogurt, a lot of kimchi or sauerkraut, a lot of steak, a lot of eggs. Kennedy now travels with sauerkraut. His wife has said that he has asked her to carry it in her purse for him, and she has said, “I actually cannot,” which is an amazing phrase. It seems they all think their skin is glowing, and people online have commented that JD Vance is looking good.

Are we sure it’s not Wegovy?

We don’t have any public knowledge of that, but we do know that he is eating eggs, sauerkraut, pickles, blackberries, and raspberries for lunch pretty often — and beef and lamb with sauerkraut for dinner. Then, when he’s on Air Force Two, he snacks on beef jerky and maybe eats a hamburger with cheese, no bun, and a side of fermented vegetables.

Now that you’re mentioning the full spectrum of JD Vance’s diet, it’s kind of reminding me of their new food pyramid. Is this part of that?

Earlier this year, Kennedy and the other health officials like to say they flipped the food pyramid. They recommended a lot more fruits and vegetables, red meat — which was controversial — and whole grains, and whole milk, that kind of thing. They also, and for the first time in the nation’s dietary guidelines, recommended fermented foods, which was something that was actually agreed upon by a lot of people, and they thought that was a good part of this, even if they had qualms about the red meat recommendations, because those can introduce more cardiac risk and risk of bad cholesterol.

How widespread is this in the White House? Does it go up all the way to the top, to the president?

Given what we have seen of his recent public dieting, I don’t think so. At the Knicks game, he was eating pizza and french fries, and, you know, he still has his Diet Coke button on his desk where he just pushes it and a Diet Coke comes. Kennedy said, once said on a podcast about him, “I don’t know how he’s alive.” 

Does the science back this up, or is this some kind of quackery that ferments can make your skin healthier and help you lose weight?

I don’t think there are a lot of good studies that show exactly that sauerkraut can help you lose weight, but there have been a number of studies that have shown health benefits. Researchers have generally agreed that sauerkraut and other fermented foods can help with digestion and inflammation. There was a 2025 study from UC Davis that suggested fermented cabbage could protect your gut and protect against illness. Basically, they found that the intestinal cells do better with sauerkraut. They help maintain the integrity of those intestinal cells. And, in general, that has a lot of other good health effects. Mainstream scientists, dieticians, are pro-fermented veggies. This is not something that is hotly debated.

Most people in the scientific community are realizing there’s a lot of good fresh science out there about how important your gut really is in your overall health. The part of the diet that is a little more controversial is the focus on red meat. Obviously, that comes with some cardiac risk and some cholesterol risk. That is why when the new dietary guidelines came out and recommended more of that for Americans, that part, in particular, made some dietitians a little upset.

Do you think fermented foods could help people with this parasite that gives you explosive diarrhea?

I personally have not seen any studies on whether fermented foods help with explosive diarrhea, but let me know if you find one.