Professors John Mearsheimer and Stephen Walt explain why U.S. and Iranian demands are fundamentally irreconcilable — and why this crisis is far from over. Instead of bringing Tehran to terms, Washington now finds itself further from a diplomatic settlement than it was in May 2025. Iran has played a weak hand with discipline and patience. The United States, by contrast, risks stumbling into another major strategic failure in the Middle East. At the core of the impasse is a basic reality: both sides are demanding the impossible. Washington insists on the full dismantling of Iran’s nuclear and missile capabilities, while Tehran seeks sanctions relief, reparations, and long-term security guarantees. Neither side is prepared to yield. The result is not a pathway to peace, but a deepening stalemate — with escalation, not resolution, the more likely outcome.