London, Boston, Toulouse: Terror Overwhelming Western Intelligence

Western governments, above all the U.K., have yet to realize that the impunity enjoyed by radical Islamist leaders to publish, organize and incite violence is the single greatest danger to their security.

The gruesome murder of a British soldier in London by two British Muslim citizens of Nigerian origin, the first Islamist killing in Britain since suicide bombers killed 52 people in London in 2005, has revived the fear of the "lone wolf" jihadist threat in...