Ukraine's Caspian Sea Drone Strike Marks a New Front With Iran

Ukrainian drones hit two cargo vessels in the Caspian Sea on 25 July 2026, killing one Iranian sailor and wounding another. It is the first Ukraine-Iran clash in the Caspian and the war's first extension into those waters. Iran summoned Ukraine's envoy and invoked Article 2(4) of the UN Charter, which bars force between states. Zelenskyy said the vessels carried military cargo.