Well, I will admit to dashing that off without a lot of forethought, that's true.
But I think Belgium as well as much of western Europe has turned a blind eye to the growing menace of Muslim terrorism. As for evidence, well that's not my specialty, but it's tough to argue that Belgium hasn't become a breeding ground for terrorism. And quite honestly, I'm afraid the US isn't that far behind them. Just my opinion obviously.
The news now is also reporting they new this current attack was coming a couldn't do anything about it. Past the tipping point so they say.
From a week ago:
Radicalisation in Molenbeek: 'People call me the mother of a terrorist' | World news | The Guardian