I'm convinced that these attacks could have easily been prevented by the government but they allowed them to go on.
It benefits them in the sense that now they can deal with the migrant crisis and put boots on Syrian ground. This is like europe's pearl harbour or gulf of tonkin and I expect to see radicalisation across Europe and Marshall law.
They want key Western capitals living in fear. And they want to lure Western boots on the ground in Syria.
How do you smash them? It's pretty easy to see.
In flat terrain like Iraq, Libya and most of Syria, there is something called cluster bombs.
With that, all of ISIS is wiped out in hours, only those holed up inside cities will survive, and they can be cut off and destroyed.
If you don't care about civilian casualties like Russia, or you can "manage " media access like the Israelis you can wipe out ISIS in a matter of 10 days to 2 weeks via close collaboration between the “4+1” - the Syrian Arab Army, Iranian and Hezbollah fighters with Russian air cover - and the Kurds, PKK, YPG, and Peshmerga.
“Comprehensive international coalition” to fight Daesh is fine. But Turkey, Saudi Arabia and Qatar, at the table in the Vienna charade, is a joke. And John Kerry should be realizing this in Vienna.
When Obama called ISIS a "JV squad" he even knows these guys can be wiped off the map really easily. But the efforts have been half assed. Yes, the US airstrikes have contained them from gaining territory but they haven't been completely destroyed and they've still had areas of movement.
With the recent attacks abroad, ISIS will be destroyed very soon especially if Saudi, Turkey, and Qatar get the fukk out of the way.