US President Donald Trump has threatened to trigger a “snapback” of international sanctions against Iran after suffering a “humiliating defeat” at the United Nations security council on Friday.

He told reporters on Saturday: “We’ll be doing a snapback. You’ll be watching it next week,” after a motion to extend a UN arms embargo on Iran was rejected.

Mr Trump said it was unlikely that he would attend an emergency summit of world leaders, called by Russian President Vladimir Putin, to avoid “confrontation” after the threat.

Russia and China opposed extending the weapons ban, which is due to expire in October.

Eleven members abstained, including France, Germany and Britain, while the US and the Dominican Republic were the only “yes” votes.

Iranian President Hassan Rouhani said during a televised speech on Saturday: “I don’t remember  [a previous time when] the United States prepared a resolution for months to strike a blow at the Islamic Republic of Iran, and it garners only one vote.

“But the great success was that the United States was defeated in this conspiracy with humiliation.”

Mr Trump plans to trigger a clause in the 2015 Joint Comprehensive Plan of Action signed between Iran and other nations.

But the US withdrew from the so-called Iran nuclear deal in 2018.