We are not just any nation.

One has to remember that every progress that has been made towards peace in the Middle East has come under American leadership.

Diplomacy: the art of restraining power.

Statesman create; ordinary leaders consume. The ordinary leader is satisfied with ameliorating the environment, not transforming it; a statesman must be a visionary and an educator.

The Chinese, on the other hand, were in the position of having an American military spy plane on a Chinese military base and they had their own internal problems to deal with. At first, the Chinese weren't all that belligerent. They were just stalling to get their own bureaucracy in line.

Any international system must have two key elements for it to work. One, it has to have a certain equilibrium of power that makes overthrowing the system difficult and costly. Secondly, it has to have a sense of legitimacy.

From a geo-strategic point of view, I consider Iran a bigger problem than the Islamic State. ISIS is a group of adventurers with a very aggressive ideology. But they have to conquer more and more territory before they can became a geo-strategic, permanent reality. I think a conflict with ISIS - important as it is - is more manageable than a confrontation with Iran.