What we would be committed to would be a representative government where all the Iraqi people decide who should lead their nation, and lead it in a way that keeps it together as a single nation and where all parts of the nation - Shia, Sunni and Kurds - are able to live free and in peace and believe that their interests are represented by the government.

Have a vision. Be demanding.

Only when you have got a clear statement of what you want to achieve, do you ask yourself how you are going to achieve it. In the military we are taught never to go for a single answer, no matter how obvious that might be.

Perpetual optimism is a force multiplier. I am talking about a gung-ho attitude that says 'we can change things here, we can achieve awesome goals, we can be the best. 'Spare me the grim litany of the 'realist;' give me the unrealistic aspirations of the optimist any day.

It was President [Bill] Clinton and the United States congress in 1998 which said that the regime has to be changed because the regime would not give up its weapons of mass destruction. We came into office in 2001 and kept that policy because Saddam Hussein had not changed.

The most important thing I learned is that soldiers watch what their leaders do. You can give them classes and lecture them forever, but it is your personal example they will follow.

We have gone forth from our shores repeatedly over the last hundred years and we've done this as recently as the last year in Afghanistan and put wonderful young men and women at risk, many of whom have lost their lives, and we have asked for nothing except enough ground to bury them in, and otherwise we have returned home to seek our own lives in peace.