A trader works on the floor of the American Stock Exchange AMEX) at the New York Stock Exchange (NYSE) in New York, US, on Wednesday, May 6, 2026. Michael Nagle | Bloomberg | Getty Images LONDON — European stocks are expected to open in negative territory as prospects for a speedy resolution to the U.S.-Iran war appear increasingly remote. The U.K.'s FTSE 100 index is seen opening 0.5% lower, with Germany's DAX down 0.76%, France's CAC 40  down 0.4% and Italy's FTSE MIB 0.56% lower, according to data from IG. Optimism over a looming U.S.-Iran peace agreement was dealt a reality check late on Monday when President  Donald Trump  said the ongoing ceasefire is "on life support" after Tehran sent an " unacceptable " counter to Washington's proposal to end the war. The state of the month-old truce is "unbelievably weak," Trump told reporters in the Oval Office. Oil prices rose in response to the comments and, overnight, bourses in the Asia-Pacific region traded in mixed territory .…