When I became President 3 years ago, I asked all my military people--not just the Washington generals but field generals and their staff, any war veterans that came to the White House--how they would finish the War on Terror that’s been going on unabated for decades.  I got a few unhelpful answers, but a surprising number said this: identify the leaders of terror, track them, spy on them, and when you have enough evidence of what they’ve done and what they’re planning on doing, unmercif...