Ukrainian drones have recently struck vessels and other assets used in military cargo shipments between Iran and Russia across the Caspian Sea. The attacks expand Kyiv’s long-range drone campaign into waters more than 430 miles from Ukraine’s nearest border.
Ukrainian President Volodymyr Zelensky claimed responsibility for the attacks on Saturday. “We also achieved very strong results with long‑range strikes in the Caspian Sea — including vessels used in military cargo shipments involving Iran, as well as a warship,” he wrote.
The Security Service of Ukraine said the strikes hit a Russian oil field, a Russian missile boat, and ships used to transport Iranian drones to Russia. The operation forms part of a wider campaign that has also reached oil refineries far inside Russia and contributed to an energy crisis in a country that remains one of the world’s largest petroleum producers.
Iran’s foreign minister, Abbas Araghchi, blamed Zelensky on Sunday for a strike he said killed a sailor on an Iranian commercial vessel. Araghchi said that he contacted Russian and European Union leaders and stated that Kyiv’s actions could not go unanswered, and Iran summoned the Ukrainian chargé d’affaires in Tehran.
Analysts noted the strikes also allow Ukraine to signal alignment with the Trump administration on Iran. Hanna Notte of the James Martin Center for Nonproliferation Studies said the attacks more closely link the European and Middle Eastern theaters.
“The more that Zelensky can signal to Trump that he’s on Trump’s side against Iran, the better,” she said.
The Caspian Sea attacks come as Zelensky arrives in Washington for talks with President Donald Trump. Zelensky is expected to press for firmer U.S. commitments on air defenses, including a license that would allow Ukraine to produce Patriot interceptor missiles. Russia has stepped up ballistic missile attacks on Kyiv in recent weeks, Zelensky has said interceptors are urgently needed, and a Raytheon delegation visited Kyiv last week.
After the meeting with Zelensky, Trump is scheduled to see Israeli Prime Minister Benjamin Netanyahu. Both leaders are in Washington for the funeral of Sen. Lindsey Graham (R-SC).
The timing has highlighted the growing overlap between the two conflicts. Kyiv has called Iran a “direct accomplice to Russian aggression against Ukraine.” Zelensky said his country has evidence that Russia shared satellite imagery with Tehran to help it attack U.S. military facilities and Gulf states. Trump said he would ask Putin about the claim and that it had no impact even if true.
Iran has supplied Russia with Shahed one-way attack drones since the fall of 2022. Russia later began producing its own version of the drones, the Geran, at a factory 600 miles east of Moscow. Ukrainian forces targeted that plant as recently as last year. The Caspian Sea has served as a key route for the shipment of these drones, along with other military shipments. Russia has used shipping companies to move equipment from Iran to the Russian mainland, with some vessels continuing via rivers and canals to the Black Sea.
The sea gives Iran its most direct path to Russia and Central Asia. Nicole Grajewski, an assistant professor at Sciences Po who has written on the Russia-Iran partnership, described the route as “somewhat unfettered by any kind of interdiction by the United States or other partners.”
Trump paused U.S. strikes on Iran over the weekend while considering further action aimed at loosening Tehran’s control of the Strait of Hormuz. Iran’s southern ports remain more important economically, but the Caspian Sea offers a way around the blockade of its Persian Gulf and northern Arabian Sea facilities.
Israel targeted a naval outpost on Iran’s Caspian coast in March. Continued Ukrainian strikes there could pressure an economic link for both countries under sanctions. Hamidreza Azizi, a visiting fellow at the German Institute for International and Security Affairs, said Iran sees the attacks “in the context of this bigger picture of being under blockades from both the south and the north.”
Since the U.S. and Israeli campaign against Iran began in February, Tehran has used Shahed drones against commercial ships in the Strait of Hormuz, civilian airports and seaports, Gulf oil infrastructure, and American bases in the region.
The Ukrainian moves follow earlier U.S. efforts to isolate Iran’s key southern port. In mid-July, American forces struck bridges, railways, and other transport links around Bandar Abbas, the strategic city on the Strait of Hormuz that hosts Iran’s naval headquarters. Those strikes were intended to cut the city off from the rest of the country while targeting maritime surveillance assets used by the Islamic Revolutionary Guard Corps.
In Moscow, the mayor reported that more than 390 Ukrainian drones targeted the capital region overnight into Tuesday, with most intercepted. Damage was confirmed to a high-rise south of the city and a warehouse to the west. No casualties were reported.
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