Repeated Strikes Near Iran's Bushehr Nuclear Power Plant Risk Radioactive Catastrophe

What Happened

Since the 2026 Iran war began on February 28, projectiles have struck on or near Iran's Bushehr nuclear power plant at least four times. Bushehr is Iran's only operational nuclear reactor, a 1,000-megawatt pressurized water reactor located in a coastal city of approximately 250,000 people on the Persian Gulf.

On April 4, a projectile struck near the plant, killing one security guard and damaging a side building. The IAEA confirmed the strike and reported that monitoring detected no increase in radiation levels. However, the IAEA Director General stated he was "deeply concerned" and declared that nuclear plant sites "must never be attacked."

The World Health Organization warned separately that a radioactive release from Bushehr would be "catastrophic," with consequences extending well beyond the plant itself to affect the city's population and potentially the wider Gulf region.

Pattern of Strikes

The four strikes in approximately five weeks represent a pattern rather than an isolated incident:

• Late March: First reports of projectiles striking near Bushehr emerge shortly after the war begins.
• March 25: PressTV reports the facility has "come under attack again," indicating at least two strikes by this date.
• Early April: Moscow Times publishes analysis warning of escalating risk.
• April 4: The most consequential strike kills a security guard and damages infrastructure near the plant.

Whether these strikes represent deliberate targeting, collateral damage from nearby military operations, or reckless indifference to nuclear safety, the pattern demonstrates a sustained failure to respect the special protections afforded to nuclear installations under international humanitarian law.

Legal Analysis

Article 56: The Special Protection of Nuclear Installations

Additional Protocol I to the Geneva Conventions, Article 56, establishes a unique and heightened category of protection for what it terms "works or installations containing dangerous forces." The article specifically names three types of installations: dams, dykes, and nuclear electrical generating stations. Bushehr is unambiguously a nuclear electrical generating station.

Article 56(1) states:

Works or installations containing dangerous forces, namely dams, dykes and nuclear electrical generating stations, shall not be made the object of attack, even where these objects are military objectives, if such attack may cause the release of dangerous forces and consequent severe losses among the civilian population.

This is an extraordinary provision in IHL. Most protections for civilian objects can be overridden by military necessity. Article 56 reverses this presumption: nuclear power plants retain protection even when they qualify as military objectives, unless they meet a narrow exception — specifically, that the installation provides "electric power in regular, significant and direct support of military operations" and attack is "the only feasible way to terminate such support."

No party has publicly claimed this exception applies to Bushehr. The plant's primary function is civilian electricity generation for southern Iran.

The "Near Miss" Problem

A critical legal question is whether strikes that land near but not on the reactor violate Article 56. The answer under IHL principles is almost certainly yes, for several reasons:

1. The duty of precaution: Article 57 of Additional Protocol I requires that attackers take "constant care" to spare civilian objects and persons. When operating near a nuclear reactor, the standard of care is necessarily elevated — the consequences of error are not merely destructive but potentially radiological and irreversible.

2. The prohibition on indiscriminate attacks: Weapons that cannot be directed at a specific military objective with sufficient precision to avoid striking a nuclear facility should not be employed in its vicinity. Article 51(4) prohibits attacks "which employ a method or means of combat which cannot be directed at a specific military objective."

3. The spirit of Article 56: The entire purpose of designating nuclear installations as containing "dangerous forces" is that their destruction or damage can trigger cascading consequences — radioactive contamination — that far exceed the immediate physical damage. A projectile that strikes a side building today could, with marginally different trajectory, breach containment tomorrow. Four such projectiles in five weeks is not caution; it is recklessness.

Rome Statute Article 8(2)(b)(iv): Disproportionate Attacks

Even setting Article 56 aside, the Rome Statute criminalizes attacks where the expected civilian harm is "clearly excessive in relation to the concrete and direct overall military advantage anticipated." When the potential harm includes radiological contamination of a city of 250,000 people and the surrounding Gulf coastline, virtually no conceivable military advantage could satisfy the proportionality test. The asymmetry between the military gain from striking near a nuclear plant and the catastrophic downside risk of triggering a radiological event is extreme.

The Zaporizhzhia Precedent

The pattern at Bushehr mirrors events at the Zaporizhzhia Nuclear Power Plant in Ukraine beginning in 2022, where Russian occupation and nearby combat raised similar risks. The international response to Zaporizhzhia is instructive:

• The IAEA established a permanent monitoring presence and repeatedly demanded that all military operations near the plant cease.
• The UN Security Council debated the issue multiple times, with near-universal agreement that military activity near nuclear plants is unacceptable.
• The IAEA Director General proposed a set of principles including that "nuclear power plants must not be attacked" — the same language now being applied to Bushehr.

The Zaporizhzhia experience demonstrated that the international community recognizes strikes near nuclear facilities as a category of threat distinct from conventional infrastructure attacks. The same framework applies to Bushehr. If anything, Bushehr presents a more acute risk: while Zaporizhzhia's reactors were shut down during most of the conflict, Bushehr may still be operational.

Why "Probable" Rather Than "Confirmed"

This incident is classified as a probable war crime rather than confirmed for one narrow reason: Article 56 contains an exception for nuclear plants that provide "electric power in regular, significant and direct support of military operations." While no party has invoked this exception for Bushehr, and the plant's function is overwhelmingly civilian, the exception's existence creates theoretical legal space that would need to be addressed in any formal prosecution. Additionally, definitive attribution of specific strikes to specific belligerents has not been independently established, though only US and Israeli forces are conducting offensive operations in Iran.

However, the following elements strongly favor a finding of illegality:

• The IAEA — the world's authoritative body on nuclear safety — has stated nuclear plants "must never be attacked."
• WHO has described the potential consequences as "catastrophic."
• Article 56's exception is extremely narrow and has never been successfully invoked in practice.
• Even if the Article 56 exception somehow applied, the proportionality analysis under Rome Statute 8(2)(b)(iv) would still likely find the risk of radiological contamination to 250,000+ civilians "clearly excessive."

Why This Is Classified Extreme

• Radiological catastrophe risk: A breach of containment at Bushehr could contaminate an area far exceeding the immediate blast zone, rendering parts of the city of 250,000 uninhabitable and potentially affecting the entire Persian Gulf coastline.
• Specifically protected under IHL: Nuclear power plants are one of only three categories of installation that receive heightened protection under Article 56 — a provision that overrides even military necessity in most circumstances.
• Pattern of strikes: Four strikes in five weeks indicates sustained exposure to nuclear risk, not an isolated error.
• Irreversibility: Unlike conventional infrastructure damage, radiological contamination cannot be repaired. A single successful strike on the reactor could create consequences lasting decades.
• IAEA and WHO alarm: When the world's nuclear safety authority and the world's health authority both issue urgent warnings about the same facility, the risk assessment is not speculative.

International Law Violations

1. Additional Protocol I, Article 56: Nuclear electrical generating stations "shall not be made the object of attack" even when they constitute military objectives. Repeated strikes on or near Bushehr violate this provision unless the extremely narrow exception applies, which no party has claimed.
2. Rome Statute Article 8(2)(b)(iv): Launching attacks where the expected civilian harm — here, potential radiological contamination of a city of 250,000 — is "clearly excessive" relative to any military advantage. The risk-reward calculus for strikes near a nuclear reactor is inherently disproportionate.
3. Additional Protocol I, Article 57: The duty to take "constant care" to spare civilians requires heightened precautions near installations containing dangerous forces. Four strikes in five weeks is incompatible with constant care.
4. IAEA Safety Standards: While not binding treaty law, IAEA standards establishing that nuclear sites must not be attacked reflect the consensus of the international community and inform the interpretation of treaty obligations.

Update: Darkhovin Nuclear Power Plant Site Struck (July 2026)

During the renewed US bombing campaign that followed the July 8 ceasefire collapse, Iran's Atomic Energy Organization accused the United States of striking the construction site of the Darkhovin nuclear power plant in Khuzestan province in an overnight attack reported on July 19, 2026, calling it "a violation of international law"; Washington did not immediately comment (RFE/RL). The IAEA said it was looking into the reports and that the site "was still in the very early stages of construction and contained no nuclear material" when last inspected, so no radiological risk was believed to arise, and Director General Rafael Grossi renewed his call for military restraint in the vicinity of all nuclear-related sites (Armenpress; Iran International; UN News). Darkhovin is a civilian power-generation project, unlike the enrichment sites at Natanz and Fordow. Because it held no fuel, the strike did not engage the radiological danger at the heart of Article 56 of Additional Protocol I in the way strikes near the operating Bushehr reactor do — but it extends the pattern of strikes on Iran's civilian nuclear power infrastructure documented in this entry.