Key developments on Jan. 24-25: * 80% of Ukraine faces emergency power cuts following Russian aerial attack * 15% of Kyiv residential buildings remain without heat after Russia's attacks, officials say * At least 1 killed,

Talks to end the war in Ukraine continue as the fourth anniversary of Russia's full-scale invasion approaches.

Statements following the talks did not indicate that any agreements had been reached, but both Moscow and Kyiv said they were open to further dialogue.

President Volodymyr Zelenskyy said earlier this week that around 4,000 buildings in the capital Kyiv were still without heating and most of the city was cut off from electricity after Russian strikes.