A Ukrainian drone attack triggered a fire late on Friday in Russia's Kaluga region south of Moscow, and social media sites showed video footage of what they described as an oil storage depot ablaze.
While the ground war in eastern Ukraine has settled into a grinding war of attrition, where Russian forces sacrifice hundreds, sometimes thousands, of troops a day, for small, incremental advances, ...
The Russian city of Saratov and nearby Engels, which hosts a major air base, "were subjected to a massive UAV attack last night," the regional governor said.
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