A Ukrainian drone strike on an Iranian cargo vessel in the Caspian Sea killed one sailor on Saturday, marking the first direct intersection of the Ukraine and Iran conflicts.
Kyiv claims the vessel was transporting drone and missile components to Russia, while Tehran condemned the attack as a criminal act and warned of unforeseen consequences.
The Caspian Sea, previously a sanctuary for Russian and Iranian logistics, is now a focal point for Ukraine's long-range campaign to disrupt military supply networks 1,500km from its border.