Explosions have rocked two Russian airbases far from the frontlines as Kyiv appeared to launch a pre-emptive strike on bombers that the Kremlin has used to try to cripple the Ukrainian electrical grid.
The Russian defence ministry confirmed the attacks on Monday, claiming two of its warplanes had been damaged when it intercepted two Ukrainian drones. For Kyiv the strike represented an unprecedented operation deep inside Russia to disrupt the Kremlin strategy of provoking a humanitarian catastrophe in Ukraine on the verge of winter.
