It was only a matter of time before this happened and my only surprise is that it's taken so long. This sort of thing can happen virtually anywhere and I dare say this won't be the last such murderous attack on innocent people going about their lives. I countries likes ours, there are countless soft targets for the terrorists to choose from and sadly they don't need fancy weapons to do their damage. All that's required is a nutter or two and any number of readily available 'tools'...
It was only yesterday that Hollande was saying that the state of emergency would not be extended beyond the 26th July:
http://www.bbc.co.uk/news/world-europe-36791666
I think they're going to have to live with it for quite a lot longer sadly.