Time for a real war on terror. All nations with an interest here - France, UK, US, Russia, Germany, Australia etc etc - need to club together and put aside their differences. Random terrorist attacks are in nobody's interests, anyone can be caught up in them and the bigger and more frequent they get the more damaging they are for the cohesion of our societies and the economy. 9/11 was the biggest and most horrendous - a wartime attack almost - and still the US were pretty much on their own soon after that. These terrorists of all groups need to be crushed like rats every time they pop up and it made clear to them that their 'cause' is absolute pointless.