the largest single block in parliament, a radical anti-american cleric, with a militia group. the political system here is the one that's probably going to create the biggest challenge, a political system that feels in many respects an affinity to ir iran. the security services, yes, they have been trained in the u.s. military as a military was very good at teaching iraqis how to fight, how to clear apartments, but far less good at -- far less effective at teaching them how to run a country. >> richard, if you don't mind sharing, i remember certainly where i was on march 20th, 2003, as i watched on cnn and msnbc the bombs falling over baghdad. had no idea we would be in this for something like nine years. what does this day feel like to you, for someone who's been there covering it for so long? >> i was here in baghdad during that period and then for a long period after that, so watching the arrival of u.s. troops, watching those first bombs come