Expelling extremists?

Ah, now here's some good news: after years of lax tolerance we have finally started to kick extremists out. The last victim is the Imam of Turin, as you can read in this commentary.

Good job, he deserved to get the hell out of our country and go back to his yacht club in Morocco long time ago. Now a few questions arise, and I hope someone will answer.

First: why was he expelled now and not, say, three years ago when he evidently helped recruit and finance a terrorist attack in his own lovely country of Morocco (where he regularly goes sailing, but of whose people evidently he doesn't care)?

Second: will our border checks be so effective that he can't come back? I somehow doubt it, though I hope I'm wrong.

Third: how many such other Imams are there in Italy? and how many other people that are linked to terrorist activities around the world? and if there's many of them, why don't we charge with the crime of international terrorism, which is now (finally, insh'allah) recognised by our law? does sending them to their own countries where no-one checks on what they do and where they can find all the volunteers of the world for all sorts of Jihad-like activities actually help?

Fourth (unrelated): what the fuck is mr. Fazio waiting before he steps downa and relieves us of having to endure the sight of his face yet another day?