Mohammad Javad Zarif - So there are two separate tracks. One track is for the Syrian government an

So there are two separate tracks. One track is for the Syrian government and the opposition that is interested in a peaceful future of Syria to come together for national unity, for the political process. At the same time, it is a requirement for everybody to stop supporting the extremist groups, to stop allowing them safe passage, to stop allowing them to receive weapons, to stop allowing them to receive financial assistance, and to come together in actually fighting them.

- Mohammad Javad Zarif

source: "Iran's Javad Zarif on Syria, Russia, and Donald Trump". Interview with Robin Wright, www.newyorker.com. December 18, 2015.