Iran has accused Ukraine of carrying out an attack in Iran’s section of the southern Caspian Sea, prompting a strong condemnation, diplomatic action and a warning from Tehran. The report, published on July 26, 2026, said Iranian officials viewed the incident with deep concern over the possibility of further attacks. Citing French or international news agencies, it described the episode as the first of its kind.

Iran’s Foreign Ministry said it summoned Ukraine’s top diplomat in Tehran to register a formal protest over the alleged attack. Tehran said the incident in the Caspian Sea constituted a clear violation of the United Nations Charter. In a separate statement, the ministry described Ukraine’s action as hostile behavior against Iran and issued a stern warning.

Foreign Minister Abbas Araghchi discussed the matter by telephone with the European Union’s foreign policy chief. He called on the international community and the UN Security Council to speak out and formally condemn the attack. Analysts cited in the report said the incident came at a critical time for Iran, which is already facing severe pressure on maritime trade because of a US naval blockade.