SPENGLER: The Lessons of Copenhagen: Too Many Most-Wanted Men. “It appears that the methods employed by European security agencies to control jihadists have broken down. Some 9,000 French citizens are fighting for ISIS or other jihadist organizations, according to a French government estimate. After several hundred thousand deaths in Syria and Iraq and the disintegration of Libya and Yemen, a very large number of young Muslims are prepared to sacrifice their lives. Security services control prospective terrorists by blackmailing petty criminals at the fringe of jihadist organizations and turning them into informants. Because the Muslim criminal milieu overlaps extensively with the terrorist organizations, this has been an effective strategy for the past decade and a half. The John le Carre novel and Philip Seymour Hoffman film “A Most Wanted Man” portrays this approach reasonably well. . . . The lesson of Copenhagan is the same as the lesson of Paris: the fragile social peace that European governments have maintained with their Muslim immigrant communities requires a fundamental revision. In the past, European security services let jihadists blow of steam while quietly culling potential killers. That has failed. The alternative is to tighten the screws on Muslim communities.”

Also attack this at the source, which is Saudi Arabia and the gulf emirates.