A failure of intelligence, and willingness to act
...Iranian-backed forces — including Lebanese Hezbollah and Syrian President Bashar Assad’s army, backed by Russian airstrikes, were able to break the long-standing ISIS siege of Kweiris airbase to the east of Aleppo city despite ISIS mobilization calls in Aleppo province to counter the offensive. On a more general level, internal documents suggest that ISIS is facing problems of cohesion in its military ranks, as the General Supervisory Committee issued an amnesty for deserters last month, whereas the normal ruling for fleeing from battle without appropriate justification is execution.It doesn't take a genius to point out that the bloodbath came as a result of the upper echelons' refusal to act and arrest anybody threatening religious violence and bar them entry to their country. If the French government wanted to, they could've prevented it long ago. Instead, they acted negligently, and now mass murder has resulted from that staggering failure and cowardice.
While it certainly is valid to point to these developments as setbacks for ISIS, they are too ephemeral in nature to tie them to the Paris attacks in particular. The sophisticated nature of the Paris attacks would have required planning and procurement of provisions predating ISIS’s latest setbacks. Though it will still take time for more precise details to emerge, nothing so far definitely shows that the Paris attacks differ significantly from prior failed plots involving sleeper cells operating in Europe — including returned foreign fighters in their ranks — with suspected links to low to mid-level ISIS operatives in Iraq and Syria.
In fact, Abdelhamid Abbaoud, a key figure in the Paris attacks, was openly flaunting his role in establishing cells to conduct attacks in Europe in an interview with ISIS’s magazine Dabiq in February. If he was assigned a general role by the highest echelons of ISIS to conduct attacks in Europe, this assignment apparently took place almost a year ago.
If they truly want to convince now, they will pass laws that allow for proper enforcement, and they'll even abolish laws like the ones Phillippe Karsenty was tried under, and let proof burdens lie upon the plaintiffs in a court trial.