The Pentagon announced Sunday that the single U.S. Navy aircraft carrier in the Middle East, the USS Nimitz, will remain on duty in the region amid heightened tensions with Iran. It marks an abrupt reversal after acting defense secretary Christopher Milller said last week that he was sending the vessel home, a move that had been met with intense opposition by senior military officers. In changing his mind, Miller cited in his statement that “recent threats issued by Iranian leaders against President Trump and other U.S. government officials,” without elaborating. “I have ordered the USS Nimitz to halt its routine redeployment,” Miller said. “The USS Nimitz will now remain on station in the U.S. Central Command area of operations. No one should doubt the resolve of the United States of America.” The update comes amid heightened tensions with Iran. Nearly a year after a U.S. airstrike killed Iranian commander Qassem …