Tracking terrorists

Terrorists have had a bad run recently. Writing in The Wall Street Journal, Daniel Henninger enumerates their failures, or rather the successes of those in the business of thwarting terrorists:Terrorism attempts failed in London and Glasgow, Scotland, a weekend ago. A jihadist plan to attack Fort Dix, N.J., was derailed a couple of months ago, followed a month later by the unearthing of a plot to blow up a gasoline pipeline at JFK.

Finding out about these plans has a double-edged effect. We are relieved that our security services seem to be working overtime. We also know the terrorist threat is real.