Emphasizing that Britain has obviously been committed to the JCPOA, Raab said: "We've reached a point where non-compliance has been so acute in the most recent steps taken by Iran that obviously we're going to be looking very hard at what should happen next."

"We want to see Iran come back to full compliance," he added.

The Joint Comprehensive Plan of Action, known commonly as the Iran nuclear deal or Iran deal, is an agreement on the Iranian nuclear program reached in Vienna on July 14, 2015, between Iran and the P5+1 together with the European Union.

ILKHA