Ukrainian forces have been targeting Russia's energy infrastructure in what Kyiv says is an attempt to limit the resources available to fund Moscow's military.
Here is a summary of the attacks, beginning with the most recent, and their effects:
Tyumen
A Ukrainian drone strike sparked a fire at the Tyumen refinery in western Siberia, more than 2,000 km (1,200 miles) from Ukraine, but the blaze was later extinguished, local Russian authorities said on July 25.
The refinery has a nominal capacity of around 8 million metric tons per year. It processes roughly 6 million tons of crude annually, producing about 0.5 million tons of gasoline and 2.5 million tons of diesel, according to industry estimates.
