We need to fix the social problems that cause terrorism before that happens. In real terms, that involves raising the level of education and the quality of life in all parts of the globe to the point where there are no large groups of people who are still so poor that they have nothing to lose, or so ignorant that they have nothing to believe in beyond what their local preacher tells them.
Osama Bin Laden wasn't poor or uneducated; neither were the underwear bomber, the shoe bomber, or the recently arrested Americans in Pakistan. While there are recent examples of impoverished masses whipped into a genocidal fury (see Rwanda) I don't see a strong causal link between poverty/lack of education and terrorism. Indeed, access to means and anomic detachment from society seem to be common among perpetrators of mass terrorism.
(Drawing parallels to the organizers of the Iraq ware is left as an exercise for the reader.)