The US regime is striking at "symbols of Iraqi power" (Hussein's palaces)and military communication infrastuctures with the purpose of decapitating the regime.
The "terrorist" regime was striking at symbols of American power, economic and corporate (Twin Towers) and military infrastructures (The Pentagon). Innocent bystanders in Iraq (collaterals) are no different than the occupants of the American structures. Neither deserved to be casualties of destructive foreign policies.
In retrospect, the "terrorists" "pre-emptive" strike was of a prescient nature given the Bush regime's plans, already in the works before 911.
Bush subsequently used the 911 attack (by Saudis and Kuwaitis) as an excuse to attack Iraq, a secular regime, not in the least connected to the Wahabist fundamentalists.
This analysis bears scrutiny.