Formally known as the Joint Comprehensive Plan of Action (JCPOA), the 2015 deal offered sanctions relief in exchange for curbs on Tehran's nuclear ambitions and guarantees it would not seek an atomic bomb

Lavrov: To resolve this urgent task, we believe it is perfectly possible to work out synchronous steps -- simultaneous steps to be taken in stages by both the Iranians and the United States

Russia urges US, Iran to coordinate return to nuclear deal

Ties between Russia and the West, already at post-Cold War lows, have come under renewed pressure over the fate of Kremlin critic Alexei Navalny

Lavrov: Don’t confuse Europe with the European Union

Russia urges US, Iran to coordinate return to nuclear deal

Lavrov blames EU for demise of its Russia ties

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Russia urges US, Iran to coordinate return to nuclear deal

Lavrov blames EU for demise of its Russia ties