U.S. President Donald Trump’s administration says that on Saturday (2000 EDT/0000 GMT Sunday) all United Nations sanctions on Iran have to be restored and a conventional arms embargo on the country will no longer expire in mid-October. But 13 of the 15 U.N. Security Council members, including long-time U.S. allies, say Washington’s move is void and diplomats say few countries are likely to reimpose the measures, which were lifted under a 2015 deal between world powers and Iran that aimed to stop Tehran developing nuclear weapons. Here is a look at the events leading to this showdown and an explanation of what could happen next: WHY IS THE ARMS EMBARGO ON IRAN EXPIRING? The Security […]