Islamic totalitarians have explicitly stated their goal: to forcibly impose Islamic law around the world. To succeed, they will continue to attack those parts of the world that oppose their "divine mission." The United States, Israel, Canada, England, India, and any other country that places the least bit of value on freedom and progress, will continue to be targets.
The freer nations need to recognize the real nature of this enemy: an ideology that demands complete submission to Allah, either voluntarily or at the point of a knife. Do you wait for the knife to slit your throat or do you fight back and defend yourself?
The combined military strength of the freer countries is more than enough to eliminate decisively and definitively the assorted collection of murderous terrorists and the governments that support them financially or ideologically. There is no need for an endless global conflict. What there is a need for is a recognition that those of us living in freer countries have the right to take any necessary actions to defend ourselves--and that our lives are at stake.