US ambassador to UN accuses Russia of 'weaponising winter'

Russia has unleashed a barrage of missiles again targeting Ukraine's energy grid, knocking out power to large parts of the country, and compounding the hardship of winter for millions. Nuclear plants and internet links were also knocked offline and the blackouts have spilled into neighbouring Moldova. At an emergency session of the United Nations Security Council, Ukrainian President Volodymyr Zelenskyy pleaded for more help from the west.