Russia says it shot down more than 120 drones overnight, in what would be one of the largest attacks of the war.

Drones of the Security Service of Ukraine and the Special Operations Forces of the Armed Forces of Ukraine, in cooperation with other components of the defence forces, hit facilities involved in the supply of Russian forces on the night of 23-24 January.

Ukraine said on Friday it had struck a Russian oil refinery and a microchip factory in a huge drone attack that caused fires at the refinery's production facilities and an oil pumping station. Russia said hours earlier that its forces had repelled an overnight drone attack,