Dhaka, Jan. 14 -- Russia struck cities across Ukraine with missiles and drones overnight in one of its biggest attacks of the New Year so far, killing at least four people and knocking out heat and power, exposing millions to dangerous winter cold.

President Volodymyr Zelenskiy said Russia had launched nearly 300 drones, 18 ballistic missiles, and seven cruise missiles during overnight attacks on eight Ukrainian regions.

The main targets were energy-generation facilities and substations, Zelenskiy said in a post on the Telegram app.

"Every such strike against life is a reminder that support for Ukraine cannot be stopped. Missiles for air defence systems are needed every day, and especially during winter."

Ukrainian air defence units s...