Kyiv, Russia and drone attack
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A strike that killed six was the latest in a series of aerial assaults, many of which have targeted the power grid in an effort to deprive Ukrainians of energy as winter looms.
Russia's Black Sea port of Novorossiysk temporarily suspended oil exports - equivalent to 2.2 million barrels per day, or 2% of global supply - on Friday, according to industry sources, after a Ukrainian missile and drone attack.