WASHINGTON (Reuters) - The United States waged a series of precision air strikes on Thursday against an Iran-backed militia in Iraq that it blamed for a major rocket attack a day earlier that killed two American troops and a 26-year-old British soldier. The U.S. strikes appeared limited in scope and narrowly tailored, targeting five weapons storage facilities used by Kataib Hezbollah militants, including stores of weaponry for past attacks on U.S.-led coalition troops, the Pentagon said. In a statement, Iraq’s military said the U.S. air strikes hit four locations in Iraq that housed formal Iraqi police and military units, in...