"Freedom ain't free" is a justification for being a world bully. You fight only when you have no other choice. Preemptive war is the biggest crock of doublespeak ever invented. Iraq did not ever threaten our peaceful existence.
The entire middle East and the radical islamists were, are and will continue to be a threat to our "peaceful" existence. By taking the conflict to the Middle East, it keeps it away from our shores (although we will inevitably be hit at some point--no way to totally avoid terrorism in this day and age).
By the way, when have we ever really been at peace. We have been fighting wars and confronting threats for the last 230 years.
Pacifism and isolationism won't work against the threat we face from radical islam. Those guys want the US and every other Western government wiped off the face of the planet to be replaced by Islamic law (which would make all of us wish for a government run by conservative Christians).
Keeping to ourselves will not work like it once did. The Oceans are no longer a barrier that protect us.
