NEW YORK (AP) — Oil prices are rising, and U.S. stocks are falling Tuesday, but the moves are not as dramatic as the dire talk coming from both sides in the war with Iran.

President Donald Trump threatened that a “whole civilization will die tonight, never to be brought back again,” if Iran does not meet his latest self-imposed deadline at 8 p.m. Eastern time to open the Strait of Hormuz. Iranian officials, meanwhile, urged young people to form human chains to protect power plants that Trump has threatened to bomb.

But the S&P 500 slipped just 0.5% as officials involved in diplomatic efforts said talks were ongoing, even though it was unclear if a deal would come in time to head off Trump’s threatened attacks. The Dow Jones Industrial Average was down 271 points, or 0.6%, as of 9:35 a.m. Eastern time, and the Nasdaq composite was 0.6% lower.

The moves were sharper in the oil market, where prices have spiked since the end of February because the war has snarled the production and transportation of crude in the Persian Gulf. Much of that oil exits the gulf through the Strait of Hormuz to reach customers around the world, but Iran has blocked it to enemies.

The price for a barrel of benchmark U.S. crude climbed 3.1% to $115.86. Brent crude, the international standard, added 0.4% to $110.17 and is well above its roughly $70 level from before the war.