If terrorism is justified by the Iraqi War, what justified the 9-11 attacks (which took place prior to Afghanistan and Iraq)? No. If all terrorist attacks are well justified, then what did India do to deserve the hijackings, bombings and attacks? It is a fool's errand to take the side of the terrorists against your own. But the world was never short of fools, I suppose.
Terrorism begets war. It is not a consequence of war. Read Bin Laden's book. He wants a war. He is not responding to Sadam being removed from power.