Ukrainian President Volodymyr Zelenskyy says that Russia has launched more than 300 drones and missiles in a nighttime attack on Ukraine's power grid. The assault knocked out heating to more than 5,600 apartment buildings in Kyiv. Mayor Vitali Klitschko reported on Tuesday that nearly 80% of these buildings had just regained heat after a previous attack. Ukraine is facing one of its coldest winters with temperatures in Kyiv dropping to minus 20 degrees Celsius or minus 4 Fahrenheit. Ukrainian officials meanwhile are in the U.S. for peace talks. They aim to finalize documents for a proposed peace settlement that focuses on postwar security and economic recovery.

Officials say emergency repair crews are working tirelessly to restore power in the Kyiv region of Ukraine. Russian attacks on energy infrastructure have left Ukrainians facing the coldest winter in years. In Boryspil, workers are dismantling and rebuilding burned-out electrical systems. They work in the snow from early morning till midnight. The supply has been restored for four hours a day, but the system collapses when power returns as people rush to use appliances. Kyiv residents are enduring freezing temperatures and darkness, with some homes without electricity for days. Russian barrages are aiming at power plants and large substations, and procuring replacement equipment such as transformers can take months.

Russia has launched another major drone and missile attack on Ukraine that targeted the country's power grid in freezing temperatures. Ukrainian President Volodymyr Zelenskyy said Tuesday that Russia fired nearly 300 drones, 18 ballistic missiles and seven cruise missiles at eight regions overnight. A strike in the Kharkiv region killed four people. The attack left several hundred thousand households without power in the Kyiv region. Russia launched a similar attack four days earlier in which Moscow used a powerful hypersonic missile. The U.S. has accused Russia of escalating the conflict. Ukraine is seeking quicker air defense deliveries from the U.S. and Europe to counter the attacks.

Russia has launched a massive overnight attack on Ukraine, using hundreds of drones and dozens of missiles. Officials say at least four people have been killed. For only the second time in the nearly 4-year-old war, it used a powerful, new hypersonic missile that struck western Ukraine in a clear warning to Kyiv's NATO allies. The attack came days after Ukraine and its allies reported major progress toward agreeing on how to defend the country from further aggression by Moscow if a U.S.-led peace deal is struck. The attack also coincides with a new chill in relations between Moscow and Washington over Venezuela and the U.S. seizure of one of its oil tankers in the North Atlantic.

Russian drone strikes have knocked out power in Ukraine's Zaporizhzhia region and left over 600,000 households in Dnipropetrovsk without electricity. Officials reported the overnight attacks on Thursday. This comes amid U.S.-led diplomatic efforts to end the conflict, nearly four years after Russia's invasion. Ukrainian President Volodymyr Zelenskyy criticized Russia for targeting public services, calling it "weaponizing winter." Emergency crews restored power in Zaporizhzhia, but many in Dnipropetrovsk remain without electricity. Zelenskyy urged global partners to pressure Moscow and mentioned ongoing discussions for postwar security guarantees with the U.S.

Ukraine's allies have agreed to provide multilayered defense guarantees to help end Russia's invasion. Leaders from Europe, Canada, the U.S., the EU, and NATO met in Paris to discuss support for Ukraine. They plan to provide equipment, training, and air, land, and sea support. U.K. Prime Minister Keir Starmer said progress was made but challenges remain. Allies will monitor any ceasefire and support Ukraine's defense long-term. Ukrainian President Volodymyr Zelenskyy said commitments need ratification. French President Emmanuel Macron called the security statement a significant step toward peace. Details of the plan remain unclear.

Officials say Ukrainian drone strikes killed two people and wounded two others, including a child, in Russia's Belgorod and Kursk regions on Sunday. More peace talks are expected in Paris early this week. In Ukraine, three people were wounded in overnight drone strikes in the Kharkiv region, and the death toll from Friday's missile attack on Kharkiv rose to five. European and other national security advisers met in Kyiv on Saturday to discuss security guarantees and economic support. Ukrainian President Volodymyr Zelenskyy said meetings of military officials and European leaders in Paris on Monday and Tuesday could finalize security guarantee documents.

Ukrainian President Volodymyr Zelenskyy has replaced the head of the country's security service as part of a top-level reshuffle. The move comes ahead of his trip to Paris, where he hopes to finalize agreements with allies to prevent another Russian invasion if a peace deal is signed. The Paris talks, set for Tuesday, are expected to include leaders from about 30 countries, known as the "coalition of the willing." Key issues include the potential deployment of troops in or near Ukraine. Meanwhile, Russian drone strikes in Ukraine continue to cause casualties and power disruptions. Zelenskyy is focusing on security and defense as the war approaches its fourth anniversary next month.

Ukrainian President Volodymyr Zelenskyy appointed the head of the country's military intelligence as his new chief of staff. In announcing the appointment of Gen. Kyrylo Budanov, Zelenskyy said Ukraine must focus on security issues, the development of its defense and security forces, and peace talks -- areas that are overseen by the office of the president. Zelenskyy had dismissed his previous chief of staff Andrii Yermak amid an investigation into alleged corruption in the energy sector. Budanov, 39, is one of the country's most recognizable and popular wartime figures. He has led Ukraine's military intelligence agency, known by its acronym GUR, since 2020.

Ukrainian President Volodymyr Zelenskyy says he would be willing to withdraw troops from the country's eastern industrial heartland as part of a plan to end Russia's war, if Moscow also pulls back and the area becomes a demilitarized zone monitored by international forces. He made the proposal Tuesday in conversations with reporters. It offered another potential compromise on control of the Donbas region, which has been a major sticking point in peace negotiations. Zelenskyy said the U.S. proposed the creation of a "free economic zone," which he said should be demilitarized. But it was unclear what that idea would mean for governance or development of the region.