I'm going to follow the alternative press. This site is one of the best places to find good anaylses.
http://www.globalresearch.ca/paris-shooters-just-returned-from-natos-proxy-war-in-syria/5423517
http://www.globalresearch.ca/paris-shooters-just-returned-from-natos-proxy-war-in-syria/5423517
http://www.globalresearch.ca/search?q=paris
I don't rule out a false flag attack. The US and European governments seem to have plans to get control of Iraq and Syria so their citizen's hating Arabians is in their interest.
They pulled off 9/11 so this Paris attack would have been child's play.
http://www.spurstalk.com/forums/showthread.php?t=239104&p=7584413&viewfull=1#post7584413
It's still too early to be sure though.
This is a good site to get background info on why they hate us.
http://www.globalresearch.ca/search?q=paris
Put the names of Arabic-speaking countries in the search feature.
http://www.thirdworldtraveler.com/htdig/search.html