The Iranian nuclear deal has looked very fragile since the election of Donald Trump in November 2016 but, so far, the U.S. president has been persuaded to leave the agreement alone.
That position is not likely to last much longer, according to political consultancy Eurasia Group, which predicted the agreement is very unlikely "to survive President Donald Trump's first term in office."
The Iranian nuclear deal, formerly known as the Joint Comprehensive Plan of Action (JCPOA), was struck in 2015 between Iran and China, the U.S., U.K., Russia, France and Germany. It was designed to limit Tehran's nuclear program in return for the lifting of economic sanctions.
Trump has repeatedly criticized the deal, however, opposing terms that would allow Iran to gradually reinstate its nuclear activities (the so-called "sunset clauses") and accusing Iran of violating the terms of the agreement.