Russian-American cooperation on the Iran nuclear deal could pave the way for an agreement on Syria, Barack Obama has said, despite the current confrontation between Moscow and the West over Ukraine.
Mr Obama praised Vladimir Putin for his role in the agreement and said there could now be an “opening” for further detente in the worst crisis in American-Russian relations since the Cold War.
Speaking shortly after a historic agreement to curb Iran's nuclear programme was signed in Vienna, Mr Obama said that there was now an opportunity for a "serious conversation" with Mr Putin about the fate of Bashar Assad, the embattled Syrian president.
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