A cargo ship flying the Russian flag, Port Olya 4, transporting ammunition and drone equipment from Iran, partially sank after a Ukrainian drone strike on 14 August, the UK Ministry of Defense reports, citing satellite imagery.

The targeted vessel, identified as Port Olya 4, was reportedly loaded with Shahed-type drone components and ammunition.
Ukraine strikes deep into Russia
Analysts note that the successful attack on a vessel located approximately 640 km from Ukraine demonstrates the effectiveness of regular deep-drone strikes carried out by Ukrainian forces into Russian territory.
Russian air defenses face difficulties in protecting both military and industrial targets from Ukrainian drones.
Iran supplies drones and ammunition to Russia
According to British intelligence, Iran has supplied Russia with artillery shells, ballistic missiles, and combat drones, as well as supported domestic UAV production. However, in 2025, Russia’s reliance on Iranian assistance likely decreased due to the growth of its own drone production.