Moscow has been targeting Ukraine’s power grid since October as part of a strategy to try to leave the country without heat and light during the bitterly cold winter.

Oleksandra Matviichuk repeated her earlier call for Putin – and Belarus’ authoritarian President Alexander Lukashenko, who provided his country’s territory for Russian troops to invade Ukraine – to face an international tribunal.

Russian President Vladimir Putin has hailed the seizure of Ukrainian territory as a major achievement.