The US announced on Saturday night that UN sanctions are being reimposed on Iran. The snapback of UN sanctions was triggered 30 days ago, following the Security Council’s vote not to extend the arms embargo on Iran.

Russia and China opposed the American move to extend the arms embargo, and the UK, France, and Germany raised objections as well.

It is expected that other members of the Council would not comply with the new sanctions. 

Pompeo said in a Tweet: "Sanctions have returned on Iran, the leading state sponsor of terrorism and anti-Semitism. This includes a permanent extension of the arms embargo. This is great news for peace in the region!"

The Secretary of State had said on Saturday night: "The Trump Administration has always understood that the greatest threat to peace in the Middle East comes from the Islamic Republic of Iran, whose violent efforts to spread revolution have killed thousands and upended the lives of millions of innocent people."

He added: "History shows appeasement only emboldens such regimes. Thus today, the United States welcomes the return of virtually all previously terminated UN sanctions on the Islamic Republic of Iran, the world’s leading state sponsor of terror and antisemitism."

Pompeo's statement continued: "If UN Member States fail to fulfill their obligations to implement these sanctions, the United States is prepared to use our domestic authorities to impose consequences for those failures and ensure that Iran does not reap the benefits of UN-prohibited activity.”   

The Secretary of State also underlined that in the coming days, the United States will announce "a range of additional measures to strengthen implementation of UN sanctions and hold violators accountable."

The sanctions were suspended following the 2015 nuclear agreement with Iran.