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

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,

President Volodymyr Zelenskyy said Sunday that a U.S. security guarantees document for Ukraine is “100% ready” after two days of talks involving representatives from Ukraine, the U.S. and Russia.

ArcelorMittal Kryvyi Rih, Ukraine's largest steelmaker, will close one of its production units in the second quarter, it said on Monday, citing EU environmental policy and high local power prices caused by Russian attacks on energy infrastructure.

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.

Czech Prime Minister Andrej Babiš has definitively ruled out the issue of selling L-159 aircraft to Ukraine, describing the matter as "closed". Details: The potential sale of L-159 light attack aircraft to Ukraine has been a topic of political debate in Czechia over recent weeks.

President Volodymyr Zelensky of Ukraine said that rare three-way negotiations between Ukrainian, Russian and American teams in Abu Dhabi had been “constructive.”