Appeasment begets more terrorism.
I don't think gaining global support and cooperation for a measured response would be appeasment. Appeasment is giving a terrorist what he wants, but Bin Landen does not want the Middle East to cooperate with us. In fact, he specifically wants to purify Muslim contries by ending the western presence in those countries.
Also, I think global cooperation is the best approach to this problem. The terrorists themselves have established world-wide networks to attack us, and I think we should use a world-wide network to fight back.
Michael