World leaders' comments

"The Iran nuclear deal will safeguard the global nuclear nonproliferation system and proves the world can solve pressing issues though negotiation."

Wang Yi, Chinese foreign minister

"As for the weapons ban, Russia and China insisted on its lifting among the first restrictions subject to abandonment. In the long run, the Iranian partners - and they have a decisive say here - have agreed to a compromise, since the West has been insisting on keeping the weapons ban in place for eight to 10 years."