It might be in response to France starting to bomb syria, they started september 25th, hitting isis training camp.
This might be the response, just happens to conincide with dirty john getting obliterated.
Either way, they will relate it to all events, and the civilians will suffer.
Until a muslim led army takes the fight directly to isis this global terror from that group won't be quelled, and there isn't the resolve politicall or the desire to do so by the proper armed muslim nations.
We're in a quagmire of circular hatred and destruction. This won't end, as to end it require negotiation, and specifically for isis, there is no negotiation, as their doctirines firmly state they are now in the end times and the end fight.
The rest of the muslims on earth do not believe this, else they would be joining them, but it doesn't mean they are moving to stop them.