Oil companies and governments are consuming their once vast stockpiles as Iran and the United States continue to struggle for control over the Strait of Hormuz.

Our energy reporter Rebecca F. Elliott explains how oil reserves helped prevent an oil shock caused by the war in Iran from getting even worse — and how low those reserves are now.

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.

Oklahoma Republicans will return to the polls Tuesday to settle an expensive nomination fight for governor, while Democrats will pick a nominee for U.S. Senate.