Russia says the attacks amount to terrorism, are an escalation of the war and that the West aids the attacks with weapons and targeting information

The drones, operated by the SBU and the Special Operations Forces, targeted the flare farm, two primary processing units, and two technological units at the Volgograd oil refinery, an SBU source said.

Astrakhan Governor Igor Babushkin said the Ukrainian attacks focused on fuel and energy facilities, starting a fire in his region but causing no casualties. The officials did not give details about the sites involved in the attacks.