Limited wars wont defeat terrorism. Only massive force will. People criticize the Dresden bombing in 45. I dont. It was bombings like that which ended Hitler's rule.
Massive force can't be brought to bear against terrorists because they're elusive and hide in civilian populations. To kill the civilians and terrorists at the same time is evil and will do nothing but create more terrorists in different places. The WoT can't be fought like W.W.II, the enemy is different and the tactics are different. We need good intelligence, flexibility, small amounts of military force, and to encourage economic growth and democratic reform in countries where terrorists recriut and train their members.