But in Afghanistan, the general rule was that since you were fighting the Taliban, which was not a lawful government force, the Geneva Conventions did not apply. And that led to a lot of excesses in Afghanistan, excesses like Abu Ghraib that were already well-publicized.

I think the behavior of the troops has been a huge factor in the rise of the insurgency and in the rise of the anti-American feelings there[in Iraq].

In a country like Iraq with its culture of blood feuds - is that the more locals are killed, the more motivation there is for the insurgency, for the insurgents the more feelings of revenge there are, and in the end the more the operational security of the soldiers suffers, because any soldier who kills an infant today is grooming the killer of his mate tomorrow.

In the occupation in Afghanistan, there are tragedies as well. It's not as bad as in Iraq because there are fewer American troops. But, as I describe in the book, going out on patrol and coming into a village, the soldiers found a stash of documents and decided this was Taliban propaganda.

Because no matter how much money we spend there [in Iraq], as long as the people there see this money as... as assistance that is unwelcome, as long as they continue to be humiliated in their own country by us... I mean, the future looked bleak, and the future after that was in fact very bleak.

The rules of engagement are so lax that soldiers are shooting and killing Iraqis under mere suspicion, and tragedies are everyday. There are road killings, killings on the road when someone is trying to pass a convoy and they get shot. Or if a roadside bomb goes off, the soldiers just start shooting in all directions.

Even if you look at Iran, those campaigners for human rights there, they don't want to have anything to do with America, because they are afraid that having American support will be the kiss of death for their movement. And that's really tragic.