There is a truth that American nonproliferation policy has never stated plainly: The United States does not oppose nuclear weapons; it opposes nuclear weapons in the hands of states it cannot control.

Nowhere is this contradiction more legible than in the campaign to deny Iran a capability Washington extended, by omission or complicity, to India, Pakistan and Israel. Stripped of its moral framing, the US position is not about global security. It is about who governs the international order, and who must be prevented from contesting it.

Two competing realist frameworks illuminate the dispute. Kenneth Waltz, writing in Foreign Affairs in 2012, argued from the perspective of defensive realism that an Iranian bomb would stabilize the Middle East by correcting Israel's nuclear monopoly.