If Islam as a religion is the cause, and for some the only cause, why weren't Muslims terrorising mainland Europe decades ago when security was far more lax? The religion and the Quran haven't changed, so why were Muslims less interested in carrying out attacks on mainland Europe than they are now?
I mean, lets ignore American 'Imperialism', the Russian invasion of Afghanistan and the subsequent arming and training of the proto-Taliban faction in response, the removal of an elected Iranian leader and support of a pro-West puppet in his place, the perceived support of the West towards Israel regardless of their occupation of Palestinian territories, the Cold War and the proxy wars in smaller countries, the support of pro-West but corrupt regimes in the Middle East. Lets forget all of that, because it's simply...religion.
Interesting read here
http://www.cf2r.org/fr/tribune-libre/islamist-terrorism-in-europe-the-case-of-belgium.php
You seem rather happy to put the blame on one half of the court while doing everything possible to ignore the factor of Islam.