This was one of the mysteries of Donald Trump as commander in chief. Sometimes he would express concern about being drawn into a conflict, and he was always talking about getting out of the “endless wars.” In the same vein, he would call off strikes we had already agreed to. At other times, like now, he would complain we were not being tough enough and want the most aggressive options possible. His views on the use of force swung back and forth like a pendulum, though even a pendulum has some predictability. The president rarely gave us much at all.

