Iran has issued a sharp warning to Ukraine after accusing Kyiv of striking an Iranian vessel in the Caspian Sea, escalating tensions between the two countries.
Tehran condemned the incident, saying the blast hit what it described as a commercial ship and left one sailor dead and another wounded.
The accusation came after Ukrainian President Volodymyr Zelensky acknowledged the operation, saying the Iranian vessel had been used to move Russian “military cargo.” Iran’s foreign minister then responded publicly.
Writing on X on Monday night, Abbas Araghchi said: “Zelensky has attacked an Iranian commercial vessel, killing a sailor.
“A blatant UN Charter violation done at Israel’s behest to drag Europe into its war. In calls with EU High Rep [sic] [Kaja] Kallas and [Russian] FM [Sergei] Lavrov, made clear that what the freeloader in Kyiv did CANNOT GO UNANSWERED.”
Iran denounced the strike as an act of aggression and said it would protect its national interests and security, while also accusing Ukraine of trying to broaden the conflict beyond its own war with Russia.
The Iranian Foreign Ministry also summoned Ukraine’s chargé d’affaires in Tehran to lodge a formal protest over what it called a “hostile and criminal” attack.
Soon after Tehran’s statement, Zelensky claimed Kyiv had detected Russia sharing satellite intelligence from the Middle East with Iran, alleging it was being used to help guide strikes in the region during Tehran’s confrontation with the US and its Gulf allies.
File image of a cargo ship along the Gulf of Oman on June 28, 2026
Firefighters work at the site of the postal distribution centre of Nova Post company, hit by a Russian drone strike, amid Russia’s attack on Ukraine, in Zaporizhzhia, Ukraine, July 25, 202
The Ukrainian president, in subsequent remarks posted on X, said Kyiv had recorded since the beginning of July ‘active Russian satellite surveillance of the Gulf states and US military facilities located there. These images subsequently appear in Iran.’
‘At the same time, there is a clear correlation between Russia’s satellite imagery of these sites and Iranian strikes – both before the attacks, in preparation for them, and afterward, to assess the damage inflicted,’ Zelensky said.
He said that on July 19 and 20 alone, Russian satellite observation had included four air bases: two in Bahrain, one in Jordan and one in Kuwait.
Back in Ukraine, Kyiv came under ballistic missile attack from Russian forces early on Sunday, while other regions suffered bombardments later during the day that killed four people.
Russia, for its part, said four people were killed by a Ukrainian drone strike in the Russian-occupied Ukrainian city of Horlivka.
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Ukraine’s air force said Russian forces had targeted the capital with ballistic missiles, as explosions rocked the city.
In its morning note, the air force said Russia had launched seven ballistic missiles and 136 drones at Ukraine overnight.
In the northern Ukrainian city of Chernihiv, local authorities said a Russian drone hit a supermarket, killing two people including a 10-year-old child, and wounding three others.
‘This is deliberate Russian terror that has no military justification,’ Zelensky wrote on Telegram.
In the eastern city of Kharkiv, one person was killed and 12 others required medical attention after a daytime drone attack.
Meanwhile, a glide bomb attack killed one person and wounded six in the southern city of Zaporizhzhia, which has been under heavy bombardment in recent months.
Kyiv Mayor Vitali Klitschko said one blaze had broken out on the seventh and eighth floors of a multi-storey apartment block in a central district after the overnight missile attack. Three people were wounded in the capital, and images released by the state emergency service showed vehicles in flames.
Zelensky had warned on Friday that Russian attacks were likely over the next 48 hours.
In Horlivka, a city in the Russian-occupied part of Ukraine’s Donetsk province, Russian-installed Mayor Ivan Prikhodko said four civilians had been killed in a Ukrainian drone strike, Russia’s TASS news agency reported. Prikhodko gave no further details.
Firefighters work at the site of the postal distribution centre of Nova Post company, hit by a Russian drone strike, amid Russia’s attack on Ukraine, in Zaporizhzhia, Ukraine, July 25, 2026
Ukrainian rescuers work at the site of a Russian attack a logistics operator’s warehouse in the Zaporizhia, Ukraine, 25 July 2026
On Saturday, Russian-installed authorities accused Ukraine of deliberately attacking civilians after 12 people were killed in a drone attack on a holiday camp in a Russian-held part of Ukraine’s Zaporizhzhia region.
Both Russia and Ukraine deny targeting civilians in the war launched by Russia’s full-scale invasion in February 2022.
Thousands of civilians have died, most of them Ukrainians killed in Russian attacks.
