The vigils in Paris are moving. The hashtag plumes of #JeSuisCharlie ("I am Charlie") are endearing. The expressions of condemnation from Muslim leaders are commendable, as are the assurances of solidarity and support from Western governments.
But, as a practical matter, they don't change a thing: The jihadists won last week.
Even if the atrocities in Paris served to imbue the civilized world — Muslim and non-Muslim alike — with a newfound resolve to battle radical Islam (it almost certainly won't), this still stands as a victory for the bad guys.
In any war, the goal is to put your enemy in a position where he has no good options. The murderous...