Tensions have escalated in the Caspian Sea as Iran condemns what it describes as a deadly Ukrainian attack on an Iranian commercial vessel, resulting in the death of a sailor. Iranian officials have accused Ukraine of aggression and have summoned Ukrainian diplomats to express their outrage. The Iranian Foreign Minister has warned Kyiv of potential retaliation, asserting that all of Ukraine is within reach of Iranian ballistic missiles. The situation has prompted discussions between Iranian and European diplomats regarding the incident, while Iran has called for action from the United Nations and the European Union. Reports indicate that Iran is treating the event as a significant escalation in the ongoing maritime tensions in the region.