I fear that we are not being violent enough in Iraq and the Middle East generally. I'm a nice guy- really. I'm not particularly violent, certainly not sadistic or cruel. I try to play nice wherever possible.
However, I fear that we have not sufficiently gotten the message through to our enemies that the US is not to be trifled with. Sure, we pretty well walked right through the Taliban and the Baath party machinery.
Thing is, our military was so precise and controlled in getting just the most necessary military targets that a lot of these people haven't figured out that they are beaten. By any objective standard, the US beat the stuffing out of their regimes. However, some of the people are in denial. Epistemology is not a strong suite in Arab culture.
People were as wicked and more in Germany and Japan during WWII. Yet after we beat them, we didn't have guerilla warfare against our soldiers. They changed their tunes right quick like, and were acting like decent civilized countries again in a fairly short order.
Of course, we just goddam destroyed their countries. We firebombed Dresden. Then of course, there was Hiroshima and Nagasaki. We devastated them past any point where anyone could trick themselves into thinking they had any choice other than repentance and capitulation.
I have no desire to nuke Baghdad, or anyplace else. However, if we dick around with these Muslim extremists long enough, eventually some of them are going to throw something really nasty at us. If we get 20 or 30 thousand people (or more) killed with poison gas in Atlanta or Kansas City, something on the order of nuclear retaliation will be inevitable.