By all appearances, the attack on Paris was well-planned and coordinated by ISIS-trained or led agents.
Given the US response to the Sept. 11, 2001 terrorist attacks, there is precedent for France to invoke Article 5 of the NATO treaty, calling on the Atlantic alliance to assist in waging war against ISIS.
The question is: Will France do it?
On the one hand, NATO exists for just this purpose. France lacks the military capability to take the fight to ISIS. Only the combined forces of NATO have that capability.
At the same time, the NATO members are themselves awash in migrant populations, fearful of civil disorder and worried about their own feeble military establishments.
Then there is Turkey. If Turkey refuses to join the campaign, the alliance will likely fracture.
France has been hit again and again by terror attacks, each escalating in scope and sophistication. The Charlie Hebdo massacre was stupidly written off as something the magazine brought on itself, and so the warning was ignored.
Can this attack be ignored? How many more innocents must die before Europe rouses itself?