The progress in Iraq is still fragile. And it could still be reversed. Iraq still faces innumerable challenges, and they will be evident during what will likely be a difficult process as the newly elected Council of Representatives selects the next prime minister, president, and speaker of the council.

The task [in Afghanistan] is to reduce civilian casualties while still not hesitating to respond to enemies who are trying to kill our soldiers.

Even the Interior Ministry in Riyadh was hit. Since then, the Saudis have employed a very intelligent and comprehensive approach to counter al-Qaida, including precise operations based on good intelligence, changes in their corrections facilities, superb strategic communications programs and a host of other initiatives - all of which, together, have helped Saudi Arabia achieve impressive results in their fight against extremists.

Pakistan are very keen to carry out the operations themselves. And there's significant effort on the part of the US and other countries to provide assistance that can enable Pakistan to do just that.

I just don't know whether it was all destroyed years ago - I mean, there's no question that there were chemical weapons years ago - whether they were destroyed right before the war, (or) whether they're still hidden.

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.

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