Iran Vows Retaliation After Ukrainian Drone Strike Kills Sailor on Iranian Vessel in Caspian Sea

Iranian Foreign Minister Araghchi warned Ukraine that a July 25 drone strike on an Iranian-flagged vessel in the Caspian Sea, which killed one sailor, "cannot go unanswered." Ukraine said it targeted vessels transporting Iranian-linked military cargo and a Russian warship. Iran denies involvement in the Russia-Ukraine war. Tehran summoned Ukraine's envoy and briefed EU and Russian counterparts.