India, Jan. 21 -- Russia bombarded Ukraine with more than 300 drones and ballistic and cruise missiles in its latest nighttime attack on the Ukrainian power grid, President Volodymyr Zelenskyy said Tuesday, as Moscow gives no public sign that it's willing to end the war on its neighbor anytime soon.

The attack knocked out heating to more than 5,600 apartment buildings in the capital, Kyiv Mayor Vitali Klitschko said. Nearly 80% of the affected buildings had recently had their heating supply restored after a major Russian barrage on Jan 9 that plunged thousands of people into a dayslong blackout, he said.

Ukraine is enduring one of its coldest winters for years, with temperatures in Kyiv falling to -20 C (-4 F). At the same time, Russia ...