The US special envoy to Iran, Brian Hook, confirmed this strategy two week after a US official, speaking on condition of anonymity, said that the United States had informed Britain, France and Germany of its plan.
Hook wrote in the Wall Street Journal that Washington would guarantee, in one way or another, the continued arms embargo, adding that the United States had prepared a draft Security Council resolution, and would go ahead with diplomacy and rally support.
The decision needs the approval of nine members without the use of any veto power, Russia, China, the United States, Britain and France, the right of veto, and Russia has already indicated its opposition to the extension of the arms embargo.
"However, if the US diplomatic veto is thwarted, the United States reserves the right to extend the arms embargo by other means," Hook said, referring to the ability of any party to the nuclear deal to activate the so-called immediate return of all UN sanctions against Iran, which include the arms embargo.
Iran got a waiver of sanctions under a 2015 agreement with the United States, Russia, China, Germany, Britain and France that prevents Tehran from developing nuclear weapons, and the agreement allowed a return to sanctions if Iran violated it.
In 2018, US President Donald Trump withdrew from the nuclear deal concluded under Democratic President Barack Obama, calling it the worst deal ever.