UK, France and Germany press Iran on NPT safeguards

You’re hearing a lot about Iran, the IAEA and something called “safeguards”. Here’s what happened this week: in March 2026, the UK, France and Germany-known as the E3-addressed the IAEA Board of Governors in Vienna. They restated that they did not take part in strikes on Iran, condemned Iranian attacks on countries in the region, and said their goal is still a diplomatic fix that brings stability.

When we talk about the NPT, we are talking about a global promise. Countries without nuclear weapons agree not to build them and to let the International Atomic Energy Agency verify that nuclear material stays in peaceful use. Those checks and balances are called safeguards. The Agency’s independence matters here: it is the world’s technical referee, not a political actor.

The Director General’s latest reporting reminds the Board that this has been a long‑running file. In June 2025, after years of unanswered questions about possible undeclared nuclear material, the Board found Iran non‑compliant with its safeguards agreement. The call since then has been consistent: provide the access and information the inspectors need.

The June 2025 military interventions created a different kind of risk: staff safety. The IAEA withdrew inspectors accordingly. According to the E3’s summary of the DG’s reports, the Agency has been unable to visit several sensitive facilities for more than eight months and still lacks Iran’s own report describing what happened at affected sites and where nuclear material now is.

Without that report and regular on‑site checks, the IAEA says it cannot verify the status of facilities or account for all enriched uranium in Iran. It also keeps open older questions about whether undeclared material or activities ever existed, because those issues were never fully resolved. In safeguards language, this is what losing ‘continuity of knowledge’ looks like.

A quick learning note on quantities. The IAEA uses ‘significant quantity’ as a yardstick-an amount of nuclear material for which the possibility of manufacturing a nuclear explosive device cannot be excluded. For highly enriched uranium, that benchmark is about 25 kilograms of contained U‑235. The E3 say the Agency cannot currently account for high enriched uranium equivalent to more than ten significant quantities. That does not mean a bomb is being built; it means the books do not balance, which is exactly what safeguards are supposed to catch.

Another term you will see is ‘60% HEU’. Anything above 20% U‑235 is classed as highly enriched. Iran has produced uranium enriched to 60%-the E3 note it is the only state without nuclear weapons to do so. Technically, moving from 60% to around 90% (often called weapons‑grade) is a shorter step than the climb from natural levels up to 60%, which is why inspectors pay special attention to this stockpile.

Because inspectors have been kept out, the Agency has had to lean on commercially available satellite imagery to note movement at Natanz, Fordow and Isfahan. A new site, the Isfahan Fuel Enrichment Plant (IFEP), sits by a tunnel complex. The DG reports ‘increasing concern’ because the IAEA has not been granted access there and cannot confirm what the observed activity means. The report does not rule out that the plant could already be operating using material stored at Isfahan.

Here is the word ‘diversion’ in plain English. Diversion means nuclear material that was declared for peaceful use is moved or used for something else, without proper notice. The DG now flags a rising diversion risk around IFEP and related facilities. Timely detection relies on inspections, cameras, and records; if those are missing for months, confidence falls fast.

The E3 back the IAEA’s professional, independent role and say safeguards under the Nuclear Non‑Proliferation Treaty cannot be suspended under any circumstances. Cooperation with the Agency, they argue, cannot be made conditional on unrelated political issues. They also recall that under reinstated United Nations Security Council resolutions, Iran is legally required to suspend all uranium‑enrichment activity.

Where does that leave us? The E3 are still betting on diplomacy and say they will work with other Board members to uphold the IAEA’s authority. In practical terms, the next steps that matter are simple to state and hard to deliver: restored access for inspectors, a complete report from Iran on affected facilities and materials, and clarity about what exactly is happening at IFEP.

If you are studying or teaching this, a helpful way to read the updates is to separate what is asserted by states from what the IAEA can verify. Watch for phrases such as ‘cannot verify’, ‘outstanding concerns’, and ‘significant quantities’, and always ask what access and data would be needed to close those gaps. That is how we build media‑literate readers of nuclear news.