Britain, France, Germany, Russia, and China met Iran in Vienna on Sunday (July 28) for talks to save the 2015 nuclear deal. The Joint Commission of the Joint Comprehensive Plan of Action (JCPOA), the deal's formal name, is chaired by the EU foreign policy service's Secretary General Helga Schmid.
U.S. President Donald Trump pulled out of an international agreement on Iran's nuclear programme last year and stepped up sanctions on Tehran. He said the nuclear deal was flawed because it did not include curbs on Iran's development of ballistic missiles or its support for proxies in Syria, Yemen, Lebanon, and Iraq.
Iran has ruled out talks with Washington over its military capabilities, particularly the missile programme that it says is defensive. It denies the missiles are capable of being tipped with nuclear warheads and says its nuclear programme is peaceful.