What is Bushehr Nuclear Power Plant?: Bushehr NPP is Iran's only operational nuclear power station, on the Persian Gulf coast. It houses a Russian-built VVER-1000 reactor that reached criticality in 2011, operated under IAEA safeguards.
How many Rosatom staff are left at Bushehr?: By 16 April 2026, Rosatom had evacuated approximately 180 of its 200-plus staff, leaving around 20 top managers and those responsible for equipment safety.Source: Lowdown Update 276
How many times has Bushehr nuclear plant been struck?: Four times between late March and 16 April 2026. The third strike came within 350 metres of the reactor; the fourth killed one security guard. No radiation increase was detected in any incident.Source: IAEA / Lowdown
What is Rosatom's role at Bushehr and why does it matter?: Rosatom built the VVER-1000 reactor, supplies its fuel, and repatriates all spent fuel. Russia has offered to take custody of Iran's enriched uranium, but Rosatom has evacuated most of the staff who would implement that arrangement.Source: editorial
What would happen if Bushehr nuclear plant was destroyed?: A direct hit on the reactor core could release radioactive material across the Persian Gulf region. IAEA Director General Rafael Grossi described the strikes as crossing the 'reddest line' of nuclear safety.Source: IAEA
Has Bushehr Nuclear Power Plant been damaged in 2026?: Yes. Bushehr has been struck four times between late March and 4 April 2026. The closest hit landed 350 metres from the operating reactor. No radiation was released. One security guard was killed in the fourth strike.Source: IAEA / Rosatom
Why did Russia evacuate staff from Bushehr?: Rosatom evacuated approximately 180 of its 200-plus staff after four strikes inside the plant perimeter. By 20 April 2026, only 24 volunteers remained to maintain equipment safety. Rosatom cited growing nuclear risk.Source: Rosatom / TASS
What did Putin say about Bushehr at the St Petersburg forum?: At the SPIEF plenary on 6 June 2026, Putin reaffirmed Russia's offer to take custody of Iran's 440.9 kg of 60%-enriched HEU and disclosed that both the US and Israel had privately told Moscow the shelling near Bushehr was accidental.Source: Kremlin / SPIEF
Is Bushehr Nuclear Power Plant still operating in 2026?: The plant was operating with a skeleton crew of 24 Russian volunteers as of April 2026, down from over 200. IAEA monitoring was suspended in April. Construction of two additional units has been halted.Source: Rosatom

Background

Bushehr Nuclear Power Plant has been struck four times between late March and early April 2026, with the closest hit landing 350 metres from the operating reactor on 28 March. By 20 April, Rosatom had completed a near-total evacuation, leaving only 24 volunteers responsible for equipment safety on a skeleton crew. The plant holds 72 metric tonnes of fresh nuclear fuel and 210 metric tonnes of spent fuel. On 6 June, Vladimir Putin disclosed at the St Petersburg International Economic Forum that both the United States and Israel privately told Moscow the shelling near Bushehr was accidental, a quiet deconfliction channel that has not appeared in any public statement. Putin simultaneously reaffirmed Russia's standing offer to take custody of Iran's 440.9 kg stockpile of 60%-enriched HEU.

Construction began in 1975 under the Shah with West German firm Siemens/KWU, was abandoned after the 1979 revolution, survived repeated bombing during the Iran-Iraq War, and reached criticality under Rosatom in 2011 using a VVER-1000 pressurised water reactor. Russia supplies the fuel and repatriates spent fuel under a bilateral agreement designed to limit Iran's enrichment incentive. The plant nominally operates under IAEA safeguards, though IAEA monitoring was suspended after the Majlis voted 221-0 on 11 April to withdraw cooperation.

The plant is both a physical and symbolic threshold of the conflict. Director General Rafael Grossi warned of crossing the 'reddest line' of nuclear safety after the fourth strike. Construction of two additional units has been suspended. The private US-Israel assurances to Moscow represent the first documented restraint signal around the plant, suggesting neither side intended to cause a radiological incident even as strikes continued inside the perimeter. With IAEA monitors out and Rosatom almost fully evacuated, the plant's safety depends entirely on those assurances holding.

Source Material

IAEA Director General Statement on Bushehr Bushehr Nuclear Plant — BBC News Bushehr Nuclear Power Plant — Reuters coverage IAEA Director General statements on Iran Bushehr Nuclear Power Plant — Wikipedia

How the World Sees Them

IAEA

Director General Grossi issued his most explicit radiological warnings but cannot verify conditions after monitoring cooperation was suspended; the private deconfliction channel bypasses the agency entirely.

Iran

Defends the plant as civilian infrastructure under international law; repeated strikes inside the perimeter without radiological incident have made each subsequent attack appear more controllable than feared.

Russia

Built and staffed the plant; the SPIEF disclosure that US and Israel privately called strikes accidental is a diplomatic signal Russia chose to make public, protecting its custody offer and its remaining 24 technicians.

Israel / US

Neither has claimed the Bushehr strikes; private assurances to Russia suggest deliberate restraint short of the reactor, but those assurances themselves confirm proximity that could trigger a miscalculation.