I said the Islamic Republic has been weakened. Why? I see five principal factors. The first is that the supreme leader’s post — the apex of the structure conceived by the revolutionary leader Ayatollah Ruhollah Khomeini — has been undermined. The keystone of the arch is now loose.

Khamenei, far from an arbiter with a Prophet-like authority, has looked more like a ruthless infighter. His word has been defied. At night, from rooftops, I’ve even heard people call for his death. The unthinkable has occurred.