Arab countries are hamstringing the U.S.’ ability to launch self-defense strikes on Iranian proxy militias that have injured and killed U.S. troops in the region in recent months, Politico reported, citing officials. The United Arab Emirates (UAE) and other Arab nations have blocked U.S. military overflight privileges and restricted access to in-country, Politico reported, citing a U.S. official, a congressional aide and two Western officials. Arab governments toe a delicate line in supporting U.S. efforts to defend against Iran-backed attacks while hoping to appease Iran and maintain an appea…