The Recent Inferno: Israel, Iran, and the Collapse of Nuclear and Legal Restraint

The Middle East stands on the precipice of catastrophe. Iran and Israel have, for the first time in modern history, unleashed direct, retaliatory war on an open battlefield. What began as a historic Israeli cyber and aerial attack inside Iran has escalated into a regional missile war with dozens of dead. While city skylines are dotted with missiles and war rooms draw red lines, the world must pause. Not to ask who is winning on the battlefield, but rather to ask who, if anyone, is acting within the bounds of international law.

From the foundational principles of sovereignty to the guarantees provided by the NPT, the June 2025 Israeli-Iranian war has presented a sobering challenge to the international order. The initial results are deeply troubling.

Israel’s Operation Rising Lion: Strategic Shock, Legal Collapse

On the evening of June 13, Israel launched Operation Rising Lion, a dramatic preemptive strike that targeted more than 100 sites across Iranian territory. These included enrichment facilities at Natanz and Fordow, missile installations at Isfahan, and alleged IRGC command-and-control centers. Coordinated drone and cyberattacks, likely involving Mossad and the Israeli Air Force, killed dozens, including nuclear scientists and senior IRGC officials. Civilian infrastructure, such as a power facility in Khuzestan, was also struck.

Israel justified its actions as a preventive measure against what it described as “imminent Iranian threats.” However, under international law, that explanation does not hold.

Article 2(4) of the UN Charter clearly states that force cannot be used against the territorial integrity or political independence of another state, unless authorized by the UN Security Council or permitted under Article 51 in response to an armed attack. Iran had not committed such an attack. Israel’s preemptive strike, lacking public evidence of an immediate threat, constituted a violation of Iranian sovereignty.

This move also sets a dangerous precedent. If unilateral assessments of risk justify cross-border attacks, then international law becomes meaningless, paving the way for selective wars based on subjective fears.

Iran’s Missile Retaliation: The Legal Right to Respond

In response, on June 14 and June 16, Iran launched more than 300 drones and ballistic missiles in an operation named True Promise III. Targets included Israeli cities such as Tel Aviv, Haifa, Rehovot, and the outskirts of Jerusalem. At least 18 Israelis were killed, including civilians and military personnel, and hundreds were injured.

Iran’s response was consistent with Article 51 of the UN Charter, which permits a state to defend itself following an armed attack. Iran had been struck directly, fatally, and without provocation, satisfying both the necessity and immediacy conditions required for lawful self-defense.

Critics argue that Iran’s attacks on urban areas were disproportionate. However, proportionality in international law is not about mirroring losses. It concerns whether the force used is necessary to neutralize a threat and deter future aggression. Iran’s attacks, while destructive, focused mainly on military installations and state infrastructure. Tehran’s advance warning to regional actors and global powers further underscores that its response was limited and calculated.

The Threat of Assassination: Against Heads of State?

One of the most disturbing developments came from a June 15 exposé by multiple news agencies. According to reports, Israel had planned to assassinate Iran’s Supreme Leader, Ayatollah Ali Khamenei, and was prevented only by U.S. intervention. Such an action would have grossly violated customary international law, which prohibits the assassination of sitting heads of state under the principle of functional immunity.

An attempt to assassinate a head of state, outside the context of a declared war or UN-sanctioned tribunal, would have crossed a grave red line. Even during the Cold War, nuclear powers avoided this threshold.

NPT: A Treaty in Crisis

The war has also exposed troubling realities about the Nuclear Non-Proliferation Treaty (NPT). Iran remains a signatory to the NPT. While it has increased uranium enrichment beyond the JCPOA limits, the IAEA has not declared Iran to be building a nuclear weapon. Israel, on the other hand, is not an NPT signatory and is widely believed to possess 80 to 90 nuclear warheads. It continues to neither confirm nor deny this status. This creates a fundamental imbalance.

Iran is under rigorous IAEA scrutiny, heavily sanctioned, and attacked for its enrichment program that has not been weaponized. Israel, immune to inspections and openly maintaining nuclear ambiguity, justifies preemptive strikes with impunity.

The result is the erosion of legal equality in the nuclear domain. If non-NPT states can attack NPT-compliant countries without accountability, the treaty loses its relevance as a global non-proliferation instrument.

The International Response: Complicity in Silence

While Western powers acted swiftly to intercept Iranian missiles over Israeli territory with high-level coordination, few explicitly condemned Israel’s June 13 airstrikes or examined their legality. By refusing to hold Israel accountable for violating Iranian sovereignty, and by rewarding its nuclear ambiguity with past NSG waivers, Western states are undermining the very norms they claim to uphold. By contrast, the Global South has voiced stronger criticism. Nations like Indonesia, South Africa, and Turkey have highlighted how the escalation is rooted in decades of legal asymmetry- where Israel enjoys impunity and Iran faces disproportionate scrutiny.

From a realist lens, both states acted according to their strategic interests. Israel sought to maintain military superiority and neutralize potential threats. Iran retaliated to reassert deterrence and signal that violations of its sovereignty would not go unanswered. But from a liberal or institutionalist perspective, the entire episode reveals the fragility of a rules-based order, where enforcement is applied unevenly.

The fact that a nuclear-armed state outside the NPT (Israel) can attack a signatory state (Iran) under the justification of preempting nuclear threats- while being shielded diplomatically- reveals a structural flaw in the global nuclear governance regime. This is not merely an Israel-Iran conflict. It is a global crisis of faith in international law.

Red Lines and Responsibilities

The June 2025 escalation exemplifies the deep legal and nuclear contradictions in the international system. Israel’s attacks were illegal, breaching Iranian sovereignty and the foundational rules of war. Iran’s retaliation, while lethal, was a lawful act of self-defense under international law. Yet, only one state continues to operate beyond the legal constraints it demands others observe.

If the world genuinely values a rules-based order, then all states- whether geopolitically powerful or not- must be held to the same legal and diplomatic standards. The alternative is not merely instability. It is the abandonment of law as a shield against war. This is no longer a war between nations. It is a conflict between law and lawlessness. And for now, lawlessness is winning.