# Ukraine strikes Iranian-linked ships, tensions rise > Live situation record from CLSTR: https://clstr.news/situations/russias-use-of-foreign-forces-in-ukraine-conflict > Updated: 2026-08-18T10:45:59.000Z. Sources: 57. Developments: 8. In late July 2026, President Volodymyr Zelensky warned of Russia’s deepening reliance on North Korea, Iran, and China. On 25 July, Ukrainian long-range drones struck an Iranian-flagged merchant vessel and a Russian ship in the Caspian Sea, killing one sailor. While Iran initially prepared a missile strike against three strategic targets in Ukraine, Tehran stood down following diplomatic mediation and an apology from Kyiv. A second wave of attacks on 3 August targeted several cargo ships, including a vessel Iran claims flew its commercial flag. This strike killed one sailor and prompted Iran’s foreign minister, Abbas Araghchi, to condemn the raid as a ‘clear violation of the UN Charter’ allegedly carried out at Israel’s request. Ukrainian officials maintained the targets were sanctioned vessels transporting military supplies via the International North-South Transport Corridor. A subsequent strike on 7 August against an Iranian commercial vessel was viewed by researchers as an attempt to demonstrate Ukraine’s strategic relevance to the United States ahead of Zelensky’s planned Washington visit, potentially to secure ballistic-missile-defence aid. Iranian spokesperson Esmail Baghaei condemned the attack and warned that Tehran would hold Kyiv accountable. Reports based on European government documents and Western officials indicate Russia is utilizing the Caspian Sea to supply Iran with TNT, ammunition, drone components, and materials for ballistic missile production. Using more than two dozen vessels, including those allegedly operated by the sanctioned company MG-FLOT, Russia is reportedly bypassing Western naval surveillance to replenish Iranian stockpiles depleted by US and Israeli airstrikes. Analysts suggest this reliance indicates that recent strikes have successfully degraded Iran’s domestic manufacturing capacity. Furthermore, reports suggest Moscow has provided intelligence and guidance to assist Tehran in targeting US forces in the region. ## Claims - Russia is preparing to send an additional 30,000 North Korean soldiers to fight in Ukraine. (disputed) - Around 14,000 North Korean troops were already deployed to the Russian‑Ukrainian front in 2024. (disputed) - Russia is shipping drone components, explosives, and ammunition to Iran via the Caspian Sea. (corroborated by 11 sources) - Zelensky said Iran's involvement constitutes a direct attack on Ukraine. (corroborated by 7 sources) - Iran has been supplying Russia with Shahed‑136 attack drones since 2022. (corroborated by 6 sources) - Iran gave Russia technology and licences to produce Shahed drones. (corroborated by 6 sources) - Ukraine attacked an Iranian merchant ship in the Caspian Sea on 25 July 2026. (corroborated by 6 sources) - Zelensky claimed Iran supplies drones and ballistic missiles to Russia. (corroborated by 6 sources) - Zelensky said the Russia‑Ukraine war is linked to the U.S.–Iran conflict. (corroborated by 6 sources) - Ukraine attacked an Iranian cargo ship in the Caspian Sea. (corroborated by 6 sources) - Iran described the incident as an act of aggression and threatened retaliation. (corroborated by 5 sources) ## Timeline ### 2026-08-18: Russia ships military supplies to Iran via Caspian Sea Russia is reportedly shipping drone components, explosives, and missile parts to Iran via the Caspian Sea to replenish stockpiles damaged by US and Israeli strikes. 13 sources. https://clstr.news/cluster/russia-supplying-military-equipment-to-iran-via-caspian-sea ### 2026-08-07: Ukraine Hits Iranian Ship in Caspian Sea Before Zelensky's US Visit Ukraine attacked an Iranian ship in the Caspian Sea to signal its value to the US before Zelensky's visit, prompting Iran to condemn the strike and warn of retaliation. 3 sources. https://clstr.news/cluster/ukraine-hits-iranian-ship-in-caspian-sea-before-zelenskys-us-visit ### 2026-08-03: Ukraine attacks Iranian-linked vessels in Caspian Sea Ukrainian drones hit Iranian‑linked ships in the Caspian Sea, killing a sailor and sparking diplomatic tension, as the strike highlights growing proxy‑war dynamics and the strategic INSTC corridor. 2 sources. https://clstr.news/cluster/ukraine-attacks-iranian-linked-vessels-in-caspian-sea ### 2026-08-02: Iran aborts planned missile strike on Ukraine after Kyiv apology Iran cancelled a planned missile strike on Ukraine after Kyiv apologized for a Caspian Sea ship attack that killed a sailor, averting escalation. 7 sources. https://clstr.news/cluster/ukrainian-attack-on-iranian-cargo-ship-in-the-caspian-sea-heightens-warescalation-fears ### 2026-07-31: Ukraine attacks Iranian cargo ship in Caspian Sea Ukraine used drones on 25 July 2026 to hit an Iranian cargo ship in the Caspian Sea, killing one sailor; Iran called it aggression and threatened retaliation, while Kyiv and Tehran discuss de‑escalation amid a 15 sources. https://clstr.news/cluster/zelensky-links-iran-conflict-to-russias-war-in-ukraine ### 2026-07-27: Zelensky Accuses Iran, North Korea and China of Attacking Ukraine Zelensky says Iran’s drone supply, North Korea’s weapons and troops, and China’s targeting tech amount to attacks on Ukraine, urging caution but preparedness for retaliation. 12 sources. https://clstr.news/cluster/zelensky-accuses-iran-of-supplying-drones-to-russia-in-ukraine-war ### 2026-07-25: Zelensky accuses Russia of sharing satellite images with Iran to aid attacks on US bases Zelensky says Ukraine hit an Iranian ship, killing one sailor, and claims Russia shares satellite images with Iran to target US bases, while also preparing to host 30,000 North Korean troops. 4 sources. https://clstr.news/cluster/zelensky-says-ukraine-attacked-iranian-vessel-alleges-russian-satellite-data-shared-with-iran ### 2026-07-25: Zelensky seeks UK aid as Russia eyes North Korean troops for Ukraine Zelensky meets UK leaders for aid and jamming tech as Russia plans to send 30,000 more North Korean troops to Ukraine. 4 sources. https://clstr.news/cluster/zelensky-seeks-uk-aid-as-russia-eyes-north-korean-troops-for-ukraine --- Cite as: Ukraine strikes Iranian-linked ships, tensions rise. CLSTR, https://clstr.news/situations/russias-use-of-foreign-forces-in-ukraine-conflict