Ukraine attacked the petroleum hub of Nizhnekamsk in central Russia’s Tatarstan region on Monday, killing 13 people and injuring 75 others, local authorities said, in one of the deadliest attacks in the country in the four-year-old war.
The Ukrainian military said it hit an oil refinery in Nizhnekamsk, which is about 1,200 kilometres (750 miles) east of the Ukrainian border and has a population of around 240,000.
Russian officials did not say what the drones targeted, but the city is home to two refineries and a petrochemical plant.
Ukraine has targeted Russian oil facilities with long-range drones almost daily in recent months.
The campaign has caused fuel shortages in Russia, eaten into its refining capacity, and unsettled the population.
Also on Monday, several Ukrainian drones sparked a fire at an industrial facility in the Tyumen region of western Siberia, said governor Alexander Moor, without offering any details.
Last month, Ukrainian drones hit a refinery in Tyumen, more than 2,400 kilometres (about 1,500 miles) east of the border with Ukraine.
Ukrainian President Volodymyr Zelensky says his country is trying to force Russian President Vladimir Putin to the negotiating table and stop his full-scale invasion, launched in 2022.
Russia is one of the world’s biggest energy producers.
Ukraine’s General Staff said its forces struck a Taneco oil refinery in Nizhnekamsk, starting a fire.
The city came under a “massive” drone attack targeting industrial and civilian facilities, according to the press service of Tatarstan’s head, Rustam Minnikhanov.
No further details were released.
A child was among the 13 people killed, along with the 75 injured, his press service said, adding that Monday was declared a day of mourning in Tatarstan.
It was not possible to independently verify either side’s claims.
Repairing the refineries is complicated for Russia.
Ukraine’s attacks have damaged specialised equipment that is often imported, making repairs time-consuming and expensive as workarounds or replacements are sought by evading international sanctions.
Russia has also regularly battered Ukraine from the air using missiles, powerful glide bombs and drones, hitting civilian areas and causing thousands of civilian casualties, according to the United Nations.
In the first six months of this year, 1,396 civilians were killed and 7,978 injured in Ukraine, the UN office in Kyiv said last week.
That was a 37% increase from the same period last year, it said.
The World Health Organisation’s European office said on Monday that one of its warehouses in the central Dnipro region of Ukraine was hit twice in less than 24 hours.
The attacks destroyed emergency supplies worth an estimated £370,000 that were intended for front-line health facilities, it said in a statement.
No casualties were reported.
Ukraine’s domestically developed long-range drones have flown increasing distances deep inside Russia, with some now reaching Siberia, around 2,000 kilometres (1,200 miles) from the border.
“We do deliver entirely justified responses, and every Russian strike will be met with our response,” Mr Zelensky said late on Sunday on social media.
“Russia’s war will be felt more and more at their own home -– in Russia.
“The only reason this is still continuing is Russia’s unwillingness to end this war.”
As part of a parallel campaign to disrupt Russian military supply lines leading to the front line in eastern and southern Ukraine, Kyiv’s forces struck road, rail and pontoon bridges in six regions last month, the Defence Ministry said on Monday.
By repeatedly striking routes for fuel, ammunition and reinforcements, Ukrainian commanders say they have made Russian logistics slower, costlier and hard to organise.
That has helped stall Russian advances and enabled Ukrainian counterattacks, they say.