Drone hits primary oil refining unit at Russia's Taneco oil refinery - pictures analysis

A drone attacked primary oil refining unit, CDU-7, at Russia's Taneco oil refinery on Tuesday, according Reuters analysis of pictures posted on media.

The unit accounts for around a half of plant's total annual production capacity of more than 17 million tons (340,000 barrels per day).

Earlier on Tuesday, Russian officials said that Russia repelled a drone attack on one of Russia's biggest oil refineries, nearly 1,300 km (800 miles) from Ukraine.