That would be carpet bombing european citizens then, as most terrorists are home grown.

I know this is football place, but seriously until we start challenging the educational societal problems and cut off the supply of young Europeans (normally second generation from immigrant families) from being radicalized in any form we will never counter the problem.

This isn't about banning faith, but challenging its conservative values against modern progressive liberal ones. I think the first and clear step would be the restricting faith schooling to be out of the main curriculum, faith schooling should seen as a after school or weekend thing. Instead we should have a civics/citizen lessons that cover the understanding of modern democratic systems but also teaches about European enlightenment ideas of the state, democracy and ideals of liberalism/liberty, especially founded in the yearly years of the French revolution.

Perhaps by doing this we could enable young (mostly men) who are targeted by radicals to have the tools to question the indoctrination of faith.

I think this would be a better approach to combating all forms of extremism not just religious, its much more successful and stops the destruction of our own rights through a "surveillance state" solution.