The 21-hour marathon in Islamabad ended not with a handshake, but with strategic clarity. Vice President JD Vance’s departure without a deal signals a decisive shift in U.S. policy: Washington is no longer negotiating to manage Iran’s nuclear program. It is demanding that Tehran abandon the capability altogether.

For nearly a full day, American and Iranian officials engaged in what were described as substantive discussions. But the outcome revealed a deeper reality: The gap is no longer technical, but political.