your position is that muslim extremism never existed before the day we invaded iraq?That might be stretching a simplistic explanation. However it would be fair to say that these attacks are the indirect result of US policies in the middle east. If we hadn't invaded and occupied Iraq there would be no ISIS, no Syrian civil war either.Why do you think that European countries should listen to US 'lessons'?Let Russia get bogged down in Syria, fighting ISIS. We should concentrate on giving military assistance to our European allies to fight the bastards they let in. I think they've probably learned their lesson. If not, we wait until they do, then help. I'm sure Germany and France are beginning to see the light through their liberal rose colored glasses by now.
These attacks are a direct result of US policies in the ME.