Iran’s legal case for striking the Gulf collapses under scrutiny

Claims of self-defence cannot justify missile attacks on neighbouring states that were not party to the conflict.

The Gulf states have spent years trying to broker peace between Iran and the West: Qatar brokered nuclear talks, Oman provided back-channel diplomacy, and Saudi Arabia maintained direct dialogue with Iran through 2024 and into 2025. Iran attacked them anyway. The idea that the Gulf states have a responsibility, a moral one, to protect Iran from the consequences of its actions because of good neighbourliness is now grotesque in context. Iran did not return good neighbourliness. Iran returned ballistic missiles.

Iran’s position is based on three propositions. First, that Iran acted in lawful self-defence pursuant to Article 51 of the UN Charter; that host countries relinquished territorial sovereignty by allowing US military bases on their territory; and that the definition of aggression in Resolution 3314 justifies the attack on those bases as lawful military objectives. Each of these propositions is legally flawed, factually skewed, and tactically wrong. Collectively, they add up to a legal argument that, if accepted, would ensure that the Gulf is permanently destabilised, the basic principles of international law are destroyed, and, in a curious twist, the very security threats that Iran is reacting to are reinforced.