MOSCOW, May 13 (Reuters) - Ukraine resumed drone attacks on Russia's oil refineries and ports on ‌Wednesday, two days after a three-day ceasefire ‌proposed by U.S. President Donald Trump expired.

Ukraine has been targeting ​Russian oil infrastructure to undercut Moscow's revenues from the energy sector and dent its military might as the four-year war grinds on.

Russia's defence ministry said ‌on Wednesday that 286 ⁠Ukrainian drones had been intercepted and destroyed over Russian regions overnight.

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In the southern ⁠Krasnodar region, drone fragments fell near an industrial facility, causing a fire in the village of Volna, ​where ​Taman port's oil products ​and other terminals are ‌located, regional authorities said.

Debris from a separate Ukrainian drone attack caused a fire at a gas processing plant, which also produces fuel, in Russia's southern Astrakhan region, the region's authorities said.

"All enemy aircraft ‌were either shot down or ​neutralised by electronic warfare systems," ​Igor Babushkin, the ​local governor, wrote on Telegram. "The debris ‌caused a fire."

Babushkin said there ​were no casualties ​or injuries and that the fire was expected to be extinguished within a few hours.

The ​plant is ‌located near the Caspian Sea, some 1,675 km (1,040 ​miles) from the Ukrainian border.

(Reporting by Reuters; ​Editing by Sharon Singleton)