It was not a theoretical question: Mr. Obama has placed himself at the helm of a top secret “nominations” process to designate terrorists for kill or capture, of which the capture part has become largely theoretical. .... underscored just what a moral and legal conundrum this could be. Mr. Obama is the liberal law professor who campaigned against the Iraq war and torture, and then insisted on approving every new name on an expanding “kill list,” .... it is the president who has reserved to himself the final moral calculation. “He is determined that he will make these decisions about...