The effects of the US bombs. Iran is taking steps (legally) to withdraw from the uranium agreement
Following the attacks on nuclear facilities, there is no up-to-date information on material stocks. In Tehran, there is talk of invoking Article X of the NPT, the Nuclear Non-Proliferation Treaty. The aim: to renounce all IAEA obligations. Not exactly a success for the White House
The trigger for the US attack on Iran seems to have taken a back seat. It has almost been forgotten. Yet Tehran’s approach to nuclear power has changed in nature and direction. Following the air strikes against Iran’s nuclear infrastructure between 13 and 24 June 2025 and the new round of military operations in 2026, the issue is no longer merely a matter of determining how much uranium Tehran has enriched, which obligations it has complied with or breached, and what scope remains for resuming inspections by the International Atomic Energy Agency. The question now is whether Iran continues to regard it as beneficial to belong to a system that recognises its right to the peaceful use of nuclear energy and verifies its activities, but which offers it no military protection against an attack. It is this rift between verification and security that explains why a delicate debate has flared up in Iran over withdrawing from the Nuclear Non-Proliferation Treaty, the NPT.
Iran, as a non-nuclear-weapon State, is bound by Article II not to acquire them; Article III links this obligation to the IAEA’s safeguards; Article IV safeguards the right to the peaceful uses of nuclear energy; Article X allows a State to withdraw if it considers that extraordinary events have compromised its supreme interests, subject to three months’ notice.
In June 2025, facilities – including Fordow, Natanz and Esfahan – were targeted, whilst the IAEA was forced to suspend part of its on-the-ground activities and withdraw its inspectors for security reasons. The attacks of 2026 then reinforced, in the most radical Iranian interpretation, the view that membership of the non-proliferation regime ensures transparency to the outside world without guaranteeing invulnerability from within.
This is a crucial distinction, because the NPT is not a collective defence treaty. It does not oblige other members to protect a facility subject to safeguards, it does not provide for an automatic military response against those who attack it, and it does not contain a security mechanism comparable to that of an alliance. This gives rise to Iran’s new argument: if the burden of transparency remains whilst physical protection is lacking, how much is the original compromise still worth?
Stocks of enriched uranium
Prior to the attacks in June 2025, the IAEA estimated that Iran possessed a total of 9,874.9 kilograms of enriched uranium, of which 440.9 kilograms had been enriched to 60 per cent U-235; 432.9 kilograms of this latter quantity had been verified directly by the Agency. During the same period, over 20,000 centrifuges were reported to be installed, distributed across 125 industrial-scale cascades at the declared sites.

