War is not a solution

Boutros Boutros-Ghali was on a tv show in France this saturday (Tout le monde en Parle). He explained with his long experience in International Politics that "war was a nest for terrorists". Of course, it's hard to think about it just after the attack in Spain or other countries, but the idea seems really true and the different examples his gave (different wars in Africa etc) show he is right and there are other approaches to try to solve these kind of problems (terrorism, attacks, etc...).
As after the September 11 attacks, I always thought that 'bombing Afghanistan' was not a solution (and was more like a punishing expedition), I'm sure the response to terrorism must not be to be afraid but to integrate more easily and more deeply Muslims and other cultures in our occidental culture.