Tehran believes it's none of our business or anybody else's to decide the future of personalities in other countries.

People have been fed misinformation. The fact is that the fighting that is going on on the ground in Syria is with Al Qaeda, with Jabhat al Nusra, with Daesh. The pockets, small pockets, of other groups are usually surrounded by these various extremist groups. . . . Once they stop fighting, there is nothing for the Syrian government to hit other than the terrorist organizations.

Iran's military hardware is less than a fraction of that of any of the countries in this region.

If anything caused ISIS, it was the 2003 U.S. invasion of Iraq.

Tehran believes it's none of our business or anybody else's to decide the future of personalities in other countries.

It is important for everybody to insure that the process will go on, that the ceasefire will hold. Of course, there is no ceasefire against Daesh [the Islamic State], Jabhat al Nusra, and Al Qaeda.

I think the most important challenge that remains is this mentality in Washington that sanctions have been an asset, and some people want to find even an excuse to keep them or an excuse to reintroduce them. I don't know whether they've looked at the record of how sanctions actually produce exactly the opposite of what they wanted to produce.