Iran has accused Ukraine of striking an Iranian commercial vessel in the Caspian Sea, killing one sailor and wounding another, and has summoned Kyiv's chargé d'affaires in Tehran to protest what it called a "hostile and criminal" act. Ukraine acknowledged conducting long-range strikes in the region, with President Volodymyr Zelenskyy saying the operation targeted ships carrying Iran-linked military cargo and a Russian warship, though he did not confirm the Iranian civilian vessel as a specific target. Tehran has called on the UN Security Council, the EU, and the international community to hold those responsible to account, warning the incident could further escalate the broader Russia-Ukraine war and adding pressure on Iran's northern maritime trade at a time when it is also facing a US blockade on its southern coast.