(Reuters) – Two Reuters journalists were injured and a driver killed on Friday after the vehicle they were in came under fire while heading to the eastern Ukrainian city of Sievierodonetsk, the latest battle line in Russia’s assault on its neighbour. Photographer Alexander Ermochenko and cameraman Pavel Klimov were travelling in a car provided by Russia-backed forces on the Russian-held part of the road between Sievierodonetsk and the town of Rubizhne, 10 km (6 miles) to the north. Reuters could not immediately establish the identity of the driver, who had been assigned to Reuters by the separ…