Dick Cheney is not the most popular of politicians, but when he offered a harsh assessment of the Obama Administration's approach to terrorism last May, his criticism stung—so much that the President gave a speech the same day that was widely seen as a direct response. Though neither man would admit it, eight months later political and security realities are forcing Mr. Obama's antiterror policies ever-closer to the former Vice President's.

In fact, the President's changes in antiterror policy have...