WASHINGTON — US President Donald Trump says he will trigger a snapback of sanctions at the United Nations on Iran. A UN Security Council vote on Friday rejected a bid from the United States to extend an arms embargo on Iran. Only two of the Council"s 15 members voted in favor of the US resolution, highlighting the division between Washington and its European allies since President Donald Trump withdrew from the Iran nuclear accord in May 2018. Diplomats and analysts say a US attempt to snap back international sanctions on Iran would lead to a messy diplomatic battle that could undermine the UN Security Council and potentially collapse what is left of the nuclear deal. The United States lost a vote at the UN Security Council on Aug. 14 to extend an international arms embargo on Iran, which is set to be progressively eased beginning on Oct. 18 under the nuclear deal. The diplomatic blow revealed how isolated Washington is at the UN over the issue — the resolution failed with only the Dominican Republic joining the United States and two countries voting against, while 11 members including European allies abstained. — Agencies