The attack on the Taneco facility, in the province of Tatarstan, appears to have been Kyiv’s deepest strike inside Russian territory since the invasion of Ukraine more than two years ago.
The strike on Tuesday started a fire which took around 20 minutes to extinguish. No major damage to the site or injuries were reported.
However, it was enough to trigger concern from investors, helping to push the cost of Brent crude above $89 (£71) a barrel on Wednesday morning – its highest level in six months.
