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,

The power grid came under critical strain amid freezing temperatures and existing damage to infrastructure. As a result of the first attack, up to 85% of consumers were simultaneously left without electricity.

Abu Dhabi hosts trilateral meeting with the U.S., Ukraine and Russia in a possible sign that the nearly four-year war could be coming to an end.

Ukrainian President Volodymyr Zelensky on Sunday highlighted progress made by Russian, Ukrainian and American negotiators in the United Arab Emirates capital Abu Dhabi, even as the path to achieving peace remains unclear.

Kyiv is ready to send an agreement to Parliament and US Congress but Ukrainians say their safety is far from guaranteed.

MOSCOW, Jan 26 (Reuters) - The Kremlin said on Monday that the issue of territory remained fundamental to Russia when it came to getting a deal to end the fighting in Ukraine, the state TASS news agency reported after trilateral weekend talks in Abu Dhabi.

Humanitarian group Save Ukraine is getting children back to their home country.

It is unclear whether a trilateral meeting in Abu Dhabi will go ahead, as Russia's agreement to the format has not been confirmed.