Kids today know way more than you think they do, with the Internet and 500 TV channels.
Like Afghanistan before it, Iraq is only one theater in a regional war. We were attacked by a network of terrorist organizations supported by several countries, of whom the most important were Iran, Iraq, Syria, and Saudi Arabia.
One of the things I thought a lot about was how can we get the views, for instance, the main plaza, you look up to Telegraph Hill from there and therefore it would be a disaster to close that view off.