Over a period of time, I think the popular will in Iran will prevail.

We went into Iraq because Iraq posed a threat to the stability of the region and was engaged in the process of trying to develop weapons of mass destruction and had links to terrorists.

The problem is that neither the M1 nor the M60 or indeed neither any tank, has sufficient ground pressure to drive a [bulldozer] blade into even marginally hard ground. They are not bulldozers, they are tanks, whether you are talking about the M1 or the M60's. So if you are going to dig in a tank, you need to have some kind of equipment.

The Crown Prince has said he needs to broaden political participation in the governing of Saudi Arabia.

So, I think even in Saudi Arabia there is movement. And we have to remember that over the years they've stabilized the oil price and that is tremendously important for the economies of the world. I think we have no choice but to work with the government of Saudi Arabia.

Over a period of time, I think the popular will in Iran will prevail.

Policymakers have to make judgments based on the best intelligence they get.