dengai, as well as you try to pin the I.D.'s upon the parties involved in both attacks, you have to realize the line between war and terrorism. And yes, they are two very different things. War is the usage of manpower and machine power to overthrow an adversary with the hopes of either destroying him or assimilating him into your collective to ensure either the safety of your nation or the expansion of your power. Terrorism is the tactic of purposefully causing fear in a nation through violence as a way of attempting to weaken and demoralize a nation. The battle of Chi Bi was war. Wei attacked Wu, Wu (and a little bit of Shu) defended its land, and Wu won through good tactics. September eleventh was terrorism. Al Qaida sought to demoralize the American nation and also attempted to ruin our economy and defense by making a random attack upon the World Trade Center and the Pentagon (and what would have apparently been the White House if the fourth plane had not been retaken and crashed into the ground at Pennsylvania). Seeing the difference between these two concepts can answer your question wholly.
"I don't trust anybody who speaks of himself in the third person."