Hm... Interesting parallels:

In the 70s, European communist terrorism was widespread because of support from the Soviet Union. Now, European islamist terrorism is widespread because of support from the middle east. I'm aware that the CIA et al. have been doing exactly the same thing, but it's just a sad pattern.

Unfortunately, if one correlates the money, the particular religious flavour, and some incentives in loss of influence in certain neighbour countries, it would point to certain gulf states that we seem to be reliant on for oil. Regard as allies even.

This is probably french terrorists, but they probably did this because they couldn't go in Syria or were ordered to do it in France from Syria. There is hundreds of young french men and few women who went there. There is every week in France a group of muslim terrorists that are arrested because they were ordered or prepared a strike. One time a group a 10 terrorists was arrested.

The problem is that there is a very significant portion of the French immigration who absolutely hate France and that ISIS can recruit so easily in this population. In many suburbs of Paris, people were cheering during 9/11. And earlier this year you didn't see any immigrant in the Charlie support demonstrations. The French press is trying to spin this as a foreign attack from the middle-east but I think that the real problem is inside France.