Re: Ah, fear.....
Note that in Paris (and previously in the UK before the 7/7 bombing, Lee Rigby murder and Jihadi John) the suspects were all known to the authorities *BEFORE* the acts took place (and even during the 7/7 inquests the point was explicitly made that having access to more information would not have changed the outcome).
It's interesting to see how nobody within those agencies ever accepts responsibility. Instead of that all we ever hear are cries of 'We need more money/information/<insert term here>!!!'.
I suppose It's a good way of deflecting the blame since it gives the impression that something other than utter incompetence was the cause, but how does this make their work any easier to do when people start to realise what's happening and start using encryption themselves?