Ukraine has stepped up its attacks inside Russia in recent weeks, aiming to knock out oil refineries, depots and ports and cripple Moscow’s biggest source ​of funding for its war in Ukraine as global prices rose due ​to the Iran war.

Zelensky said Ukraine’s security service had reported a ⁠successful strike deep inside Russia, calling it “a new stage in the use ​of Ukrainian weapons to limit the potential of Russia’s war” in a post ​on X.

The Ukrainian president posted a video of smoke billowing into the sky, but did not identify the target that was hit.

“The straight-line distance is over 1,500 kilometres. We will ​continue to extend these ranges,” he added.

Ukraine’s Security Service, the SBU, said ​in a later post that its drones struck a Russian oil pumping station near the city ‌of ⁠Perm overnight, some 1,500 km from Ukraine.

On Tuesday, a Ukrainian drone attack caused a major fire at a Russian oil refinery in the Black Sea port of Tuapse, a third attack on the refinery in less than two weeks.

Russian ​President Vladimir Putin ​described the attack ⁠as evidence of increased Ukrainian attacks on civilian targets.

Ukraine’s Defence Ministry said that since 2022, when Russia launched the ​full-scale invasion of its neighbour, Ukraine has increased the range ​of ⁠its strikes against Russia by 170%.

Ukraine has built up a stock of domestically produced long-range weapons since the 2022 invasion.

In February, Ukrainian drones struck the Ukhta refinery in ⁠Russia’s ​Komi region, some 1,750 km from the Ukrainian ​border, regional officials said.

“It is important that every strike reduces the capabilities of Russia’s military industry, ​logistics, and oil exports,” Zelensky added.