From the time of General Nasser, the Egyptian military’s core competence has been crushing the Muslim Brotherhood — for 60 years its most powerful rival. Killing some leaders, imprisoning others, keeping still others on a very short leash as the representatives of a quasi-legal political movement: this is what the Egyptian army and its police allies in the interior ministry know how to do, and since Mohamed Morsi’s downfall they appear to be doing it very effectively once again.