kebabking
Not a Girly Swot, but I like them....
Seems very plausible. Less than 24 hours
i doubt it, IS won't have a cell - even a franchise cell - sat in France with weapons and explosives just waiting for something to avenge. its a planned, deliberate attack that would require far more than 18 hours to brew up. big event, president of france in attendance, massive viewing audience - is there anything to suggest that it would only be a target after IS have got something to be pissed off about?
it could be a random looking for revenge - anyone who says 'can't' with relation to this stuff is a fool - but the odds against that have got to be pretty high.