The Islamic State attacks in Paris have reopened the debate over antiterror surveillance, and a good thing too. President Obama’s CIA director John Brennan said this week that it has become more difficult to identify terrorists and break up their plots “because of a number of unauthorized disclosures and a lot of hand-wringing over the government’s role.”
Mr. Brennan mentioned no names, but by “unauthorized disclosures” he surely meant Edward Snowden, the spook who stole and absconded to Russia with details of the National Security Agency’s most highly classified antiterror surveillance programs. Jihadists responded by changing their communications habits, making them harder to detect.
We’ll learn more about why the French failed to prevent the Paris massacre, but it’s already obvious that it was in part an intelligence failure. French security had at least one, and maybe more, of the jihadists on their watch lists. But they either lost track of their movements, or failed to find or properly read clues about their intentions. The French are good at local surveillance—and you can bet they aren’t following the U.S. Army Field Manual in their interrogations—but the West needs global intelligence collection to fight global jihad.