We consider ISIS and extremism to be a threat to all of us in the region. . . . Our position is that we help the legitimate governments in the region that have representation in the United Nations. We help the Iraqi government on their request through advisers; we help the Syrian government on their request to help with advisers to fight extremists. . . . So it's both lawful and legitimate.

Iran is a powerful country. Iran is a big country with a large population, natural resources, human resources. But we are a country that is content with its size, content with its geography. We have not engaged in any military adventures in the past 250 years. We don't see any of this as Iran trying to dominate this region. We see some people panicking in our region and we believe there is no need to panic. We are prepared to work with all our neighbors to ensure the security and prosperity of our region.

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

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.

We're [Iran] not dismantling anything. We are uninstalling some centrifuges and reconstructing the Arak reactor, modernizing it. . . . The remaining activities that we need undertake will not take more than several days, less than two weeks.

We consider ISIS and extremism to be a threat to all of us in the region. . . . Our position is that we help the legitimate governments in the region that have representation in the United Nations. We help the Iraqi government on their request through advisers; we help the Syrian government on their request to help with advisers to fight extremists. . . . So it's both lawful and legitimate.

The Persian Gulf is our lifeline ... We will respect international navigation, for us, freedom of navigation in the Persian Gulf is a must.