As John says, such a terroristic organization could only gain traction if there is fertile soil to grow. Again take Ireland for example. Its poverty and hopelessness that are fertile grounds. Only, If you give them something they don't want to lose (often economical, social gains) you're able to weed out the evil roots of terrorism.

As for who's fault it is... is a difficult question. The western world certainly is not without blame. But the real question is how to build up a peaceful and successful middle east. The answer goes well beyond just a military defeat. You'll have to give them hope and something live for (rather than die). That is not necessary money that needs to come out of our pockets.

Give me a break. Every group of immigrant that ever came to this country faced those same obstacles because of prejudice. The big difference between all the other nationalities that emigrated to America and the Muslims is that the other nationalities wanted to assimilate. The Muslins do not. BTW, even though the other nationalities were discriminated against and had to work really hard to earn a decent living, they did not go around shooting innocent civilians.