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

Background

Bushehr Nuclear Power Plant is Iran's sole operational nuclear power station, on the Persian Gulf coast of Bushehr Province. 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 was finally brought to criticality by Rosatom in 2011 using a VVER-1000 pressurised water reactor design. Russia supplies the fuel and repatriates spent fuel under a bilateral agreement designed to limit Iran's enrichment incentive. The plant operates under IAEA safeguards.

The plant has been struck four times between late March and 16 April 2026. The third strike on 28 March hit a structure just 350 metres from the reactor; the fourth on 4 April killed one security guard and prompted Rosatom to evacuate 198 additional staff within 20 minutes. By 16 April, Rosatom had evacuated approximately 180 of its 200-plus staff, leaving only around 20 top managers and those responsible for equipment safety. Kremlin spokesman Dmitry Peskov continued to publicly advance Rosatom's uranium custody offer even as the staff who would implement it had been evacuated.

The IAEA confirmed all four strikes; Director General Rafael Grossi warned of crossing the 'reddest line' of nuclear safety. Construction of two additional reactor units has been suspended since the early strikes. With Iran simultaneously filing to withdraw from the Nuclear Non-Proliferation Treaty and IAEA monitoring suspended after the Majlis voted 221-0 on 11 April, Bushehr has become both the physical and symbolic centre of the conflict's most dangerous threshold: the plant the world can see being struck, while the monitors who would verify its safety have gone home.

Source Material

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 has issued increasingly direct warnings but cannot verify conditions inside Iran after the Majlis suspended monitoring cooperation.

Iran

Defends the plant's operation as civilian infrastructure under international law; each unanswered strike normalises the next while removing Russia's operational capacity.

Russia

Rosatom built the plant and bears responsibility for its safety; the mass evacuation exposes the contradiction of Peskov's custody offer with an empty operations floor.

Israel / US

Have not claimed responsibility for strikes; each attack raises the threshold question of whether a radiological incident would change the conflict's escalation calculus.