Oil prices and stock markets worldwide swung through a shaky Monday with uncertainty about what will happen with the Iran war. The S&P 500 swiveled between gains

Oil markets jolted higher Monday after Iran threatened to shut the Strait of Hormuz amid escalating tensions in the Middle East. West Texas Intermediate crude surged 7% to about $94 a barrel and Brent climbed 6% to roughly $97,

U.S. stocks rose May 26, with the S&P 500 up 0.4%, after President Donald Trump said negotiations with Iran were “proceeding nicely.” The price for a barrel of Brent crude, the international standard, rose 4% to $97.14. Most big U.S. companies have ...

The deal was expected to open the Strait of Hormuz and lift the U.S. naval blockade on Iranian ports. But it would leave the thorniest nuclear issues for another day.

Escalating attacks between the US and Iran threaten to derail efforts to end the war. Trump warns of consequences as negotiations stall.

The US’s emergency supply of crude oil has fallen to its lowest level since 1983 as the Trump administration moves toward completing its plan to release 172 million barrels to ease surging fuel prices spurred by the war in Iran.