Iraq's parliament called on Sunday for U.S. and other foreign troops to leave as a backlash grows against the U.S. killing of a top Iranian general, and President Donald Trump doubled down on threats to target Iranian cultural sites if Tehran retaliates.<br /><br />Trump also threatened sanctions against Iraq and said that if U.S. troops were required to leave the country, Iraq's government would have to pay Washington for the cost of a "very extraordinarily expensive" air base there.<br /><br />He said if Iraq asked U.S. forces to leave on an unfriendly basis, "we will charge them sanctions like they've never seen before ever. It'll make Iranian sanctions look somewhat tame."