In this quote Bush seems to admit that he doesn't have as much reason to care about the war as someone whose children could be deployed. I don't want to read too much into it, but he has a point. It's a lot easier to "throw your weight around," as he and Rove wished to do before the beginning of the war, when it's someone else's kids doing the fighting and dying.
Here's something that I just have to comment on, even though it doesn't have to do with the Iraq war directly. Go read this post on National Review's The Corner in which John Derbyshire calls the British soldiers detained in Iran "wimps" and says they should suffer dishonorable discharges or worse. Now, nobody believes these statements anyway because of the suspicion of coercion, and it's not as if they betrayed state secrets or anything, so why the derision? They aren't our soldiers, so I suppose Derbyshire doesn't have to support them if he doesn't want to, but Britain is our closest ally and this seems like a crazy case of blaming the victims.