Ironically it often seems to be the same people whinging about the mass migration of refugees across Europe who want to bomb Syria which will defacto lead to even more refugees migrating across Europe.
John F is right, you can't kill an ideology and in case anyone hasn't noticed none of the people in the attacks in Paris were refugees; they were all nationals of Belgium or France.
Stop the money, stop the guns and other arms freely making their way into their hands and let's support a UN led negotiated peace settlement whoch includes the key players like Iran and which both Putin and Obama have now, after FIVE years of war said they support.