Iran is the only country around the negotiating table that has not been attacked by either al-Qaida or Daesh.

What we want is stability and security so we can focus on our own development. But we have these problems in our region, and nobody has been able to resolve them. The whole world was saying that the countries of the regions should step up and resolve their problems, so we stepped up.

The Middle East has gone through periods of turmoil before. In the 1950s and 1960s, there were revolutions. When monarchies were collapsing in a number of countries, we had radicals and we had Nasserism. Today it's a little bit more complicated.

We have no interest in seeing an unstable Yemen or seeing a Yemen that is devastated.

After the revolution of 1979, Iran embarked on a policy of sectarianism. Iran began a policy of expanding its revolution, of interfering with the affairs of its neighbors, a policy of assassinating diplomats and of attacking embassies. Iran is responsible for a number of terrorist attacks in the Kingdom, it is responsible for smuggling explosives and drugs into Saudi Arabia. And Iran is responsible for setting up sectarian militias in Iraq, Pakistan, Afghanistan and Yemen, whose objective is to destabilize those countries.

The Iranians know what they need to do in order to become a responsible member of the international community and in order to become a good neighbor, and it's really up to them to change their behavior.

Is Russia worried that defeating Daesh will open the door for defeating Bashar Assad? That would be a different story. But I don't think World War III is going to happen in Syria.