By Andrew Osborn and Filipp Lebedev (Reuters) -Four oil tanks at a large storage facility in the town of Klintsy in Russia’s western Bryansk region caught fire on Friday after the military brought down a Ukrainian strike drone there, Alexander Bogomaz, the regional governor, said. Aided by a specialised firefighting train, firefighters tackled what he said was a serious blaze at the facility controlled by oil major Rosneft. Nobody was hurt in the attack, he added. “An aeroplane-style drone was brought down by the defence ministry using radio-electronic means. When the aerial target was destroy…