After a U.S. Shift, Iran Has a Seat at Talks on War in Syria -New York Times

Iran’s participation also appeared to signal how Iran is emerging from decades of American-imposed marginalization. Only two years ago, it was disinvited from joining Syrian peace talks because of pressure from the United States. Now, with Iran’s enhanced standing in the aftermath of the nuclear agreement, Mr. Kerry appears to be testing whether a broader basis for cooperation is possible.