Stocks plunge and oil surges 10% after Trump vows to hit Iran 'extremely hard'

The president's prime-time address reversed a two-day rally in U.S. stocks that had been driven by optimism over a possible end to the war

 Alex Brandon/AP Photo/Bloomberg via Getty Images

Oil prices climbed sharply and stock futures sunk early Thursday after President Donald Trump vowed Wednesday night to strike Iran "extremely hard" over the next two to three weeks and offered no clear path to end a war now in its second month.

U.S. West Texas Intermediate crude futures rose as much as 10% to $110.21 a barrel. Brent crude futures climbed 8% to above $109 a barrel. Futures tied to the Dow........

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