I think no commander ever is going to come out and say, 'I'm confident that we can do this.

The president and I sat down in the Oval Office, and he expressed very clearly that what he wants from me is my best professional military advice.

First and foremost is to not allow the reestablishment, if you will, of an extremist sanctuary that can export the kind of terror that ended up with terrorists taking down the World Trade Center and plowing into the Pentagon and a field in Pennsylvania. That's the point: We started this war because the Sept. 11 attack came from this area. And we do not fight alone, but with some 40 allies who share that view.

We cleared many of their towns and cities and rural areas of al-Qaida Iraq and other insurgents.

I will not ever run for political office, I can assure you of that.

There are some ideas that will translate from Iraq to Afghanistan and there are many that will not. The first lesson of counterinsurgency, in fact, is that every situation is truly unique, has its own context, its own specific set of factors - and you have to understand that context in enormous detail to be able to craft a sound and comprehensive approach.

Iran, as we have already discussed, has carried out very, very harmful activities inside Iraq. Funding, trainings, arming and, in some cases, even directing the activities of the special groups associated with the Jaish al-Mahdi and the Sadr Militia.