At least five rockets were launched from Iraq’s town of Zummar towards a U.S. military base in northeastern Syria on Sunday, two Iraqi security sources told Reuters. The attack against U.S. forces is the first since early February when Iranian-backed groups in Iraq stopped their attacks against U.S. troops. The attack comes one day after Iraqi Prime Minister Mohammed Shia al-Sudani returned from a visit to the United States and met with President Joe Biden at the White House. Two security sources and a senior army officer said a rocket launcher fixed on the back of a small truck had been parke…