KYIV, Ukraine • Ukraine restored electricity and other vital services to some areas, but most of the capital and other parts of the country remained without power in the cold after another wave of Russian missiles targeted civilian infrastructure.

The relentless attacks threaten to trigger another refugee exodus to Europe and underscore Kyiv’s need for more increased air defenses.

“When it is freezing temperature outside and millions of people are cut off from electricity, heating and water as a result of Russia’s missile attack on energy facilities, it is a clear crime against humanity,” Ukrainian President Volodymyr Zelensky told the United Nations Security Council by video link after Wednesday’s barrage.

Russia’s envoy, Vasily Nebenzya, told the gathering the attacks will continue until Kyiv is forced to take a “realistic” approach to potential talks, saying the strikes were retaliation for U.S. and European weapons supplies to Ukraine.

Power was still out in 70% of the capital, Kyiv, and half of residents lacked running water, mayor Vitali Klitschko said on Telegram. Emergency workers restored electricity to critical infrastructure in 17 of 24 regions of the country, officials said.

The barrage of about 70 missiles hit targets ranging from key energy facilities to a maternity ward, killing a newborn. The outages left mobile communication towers without power, causing internet connection slowdowns. Temperatures dropped below freezing in much of the country overnight.

After suffering a series of battlefield defeats at the hands of Ukraine’s army, Moscow has turned to targeting energy in a bid to crush Ukrainians’ spirit and raise pressure from its allies to agree to talks.