From the article:

Ukraine’s operation, named “Molochka”, began on July 6. Ukraine’s commander of unmanned forces, Robert “Madyar” Brovdi, said it “paralyzes the feeder fleet of Russian courier tankers”, in comments on his Telegram messaging channel.

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These flat-bottomed tankers and barges ferry oil from the shallow waters of the Volga-Don Canal and Sea of Azov to larger tankers waiting in the Black Sea on the other side of the Kerch Strait, he said.

“It essentially prevents the export of ‘black gold’,” said Brovdi, and “restricts the delivery of scarce gasoline to Crimea via the narrow channel of the shallow Sea of Azov, leaving the main and very dangerous method of delivery as rail and road tank cars.”

During the first 10 days of the operation until July 16, Brovdi said, Ukraine had struck 147 tankers of the Russian shadow fleet. The majority, 117, were feeder tankers in the Sea of Azov. The rest were in the Black Sea.

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On the night of July 13, Ukraine’s Security Service (SBU) also struck several ferries used to transport military materiel across the Kerch Strait, as well as oil storage and trans-shipment points.

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Ukraine also targeted the Crimean electricity supply, striking the Saky thermal power plant on July 9, five electricity substations on July 10 and nine more substations and the Kuban-Crimea electricity transfer point in Russia on July 13.

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Crimea seems set for more suffering, however, as Ukraine’s campaign appears to be mounting.

The strikes against it and the Sea of Azov are part of a campaign of mid-range strikes begun this year to starve Russia’s front line of fuel and weapons, and the Kremlin of export revenue from fossil fuels.

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On July 7, Russia said Ukraine tried to blow up the main compressor station on its TurkStream gas pipeline, which supplies 16.5 billion cubic metres of gas to Turkiye a year, and has a similar capacity designed to serve Southeast Europe.

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Russian petrol production now reaches only two-thirds of seasonal needs, said the Reuters news agency, citing two industry sources and its own calculations.