Iran says US caused irreparable harm to treaty on nuclear arms

Jonathan Tirone, Golnar Motevalli, Bloomberg News on Jun 23, 2025

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Iran said U.S. strikes on its nuclear sites over the weekend have delivered an “irreparable blow” to the Nuclear Non-Proliferation Treaty — a bedrock, international agreement preventing the spread of atomic bombs.

Iran’s envoy for the International Atomic Energy Agency, Reza Najafi, described U.S. attacks as an act of aggression that “delivered a fundamental and irreparable blow to the international non-proliferation regime conclusively demonstrating that the existing NPT framework has been rendered ineffective.”

He did not specify whether Iran would look to leave the NPT, something that would probably mean the United Nations’ nuclear watchdog can no longer inspect the country’s atomic facilities.

Iran’s envoy made the comments on the sidelines of an International Atomic Energy Agency meeting in Vienna, convened to discuss the ongoing strikes against Tehran’s nuclear infrastructure.

IAEA Director General Rafael Mariano Grossi reiterated his inspectors don’t know the location of Iran’s stockpile of enriched-uranium and demanded they be informed.

“Any transfer of nuclear material from a safeguarded facility to another location in Iran must be declared to the agency as required under Iran’s safeguard agreement,” he said, adding “there needs to be a cessation of hostilities for the necessary safety and security conditions to prevail so that Iran can let IAEA teams into the sites to assess the situation.”

On Sunday lawmakers in Tehran reviewed the possibility of the Islamic Republic withdrawing from the NPT in response to the U.S.’s attack. Any final decision to do so would have to be made by Iran’s Supreme National Security Council and Supreme Leader Ayatollah Ali Khamenei.

The U.S. carried out an extensive military operation against three nuclear sites in Iran — Fordow, Natanz, and Isfahan — over the weekend. President Donald Trump said they were “obliterated.”