Tulsa businessman Mike Mazzei narrowly won the Republican nomination for Oklahoma governor on Tuesday after getting a boost from President Donald Trump's social media attacks on Mazzei's rival, state Attorney General Gentner Drummond.

The Kremlin said Wednesday that CIA Director John Ratcliffe held talks in Moscow with his intelligence counterparts, a rare and secretive visit at a time when relations with Washington remain strained over Russia's war in Ukraine.

Democratic-controlled states on Wednesday filed another lawsuit challenging President Donald Trump's executive order seeking to limit mail voting in this year's midterm elections.

Canada imposed retaliatory tariffs against the United States as the two neighbors slide toward an all-out trade war. The tariffs will hit a range of U.S. products, from industrial goods to everyday items. At the same time, President Trump is threatening Canada with even steeper tariffs. William Brangham reports.

To discuss the trade war and deteriorating relations between the U.S. and Canada, Geoff Bennett spoke with Canadian trade representative Dominic LeBlanc, a central figure in negotiations with the United States.

The Supreme Court on Monday issued an emergency order that allows the Trump administration to move forward, for now, with plans to restrict mail-in voting ahead of the midterm elections in November. Opponents say it will bring chaos to the election process only days before ballots in some states are mailed out. Liz Landers discussed more with Steve Vladeck of the Georgetown University Law Center.

Agriculture Secretary Brooke Rollins acknowledged American farmers' concerns over the escalating trade war with Canada Tuesday but insisted the United States will come out on top.