New U.S. sanctions against Iran’s supreme leader and foreign minister have closed off diplomacy, Iran said on Tuesday, blaming the United States for abandoning the only route to peace just days after the two foes came within minutes of conflict. U.S. President Donald Trump signed an executive order imposing sanctions on Monday against Supreme Leader Ali Khamenei and other senior figures. Sanctions against Foreign Minister Mohammad Javad Zarif are expected later this week. The moves came after Iran shot down a U.S. drone last week and Trump called off a retaliatory air strike minutes before impact, which would have […]