A third of Ukraine's capital, Kyiv, was left without heating following an overnight Russian missile and drone barrage, Ukraine Foreign Minister Andrii Sybiha said in a post on the platform X.
Kyiv is currently seeing temperatures of around 0 degrees Celsius (32 degrees Fahrenheit), with minimum nighttime temperatures expected to drop to -8 degrees Celsius by the end of the week, according to weather forecasts.
Sybiha condemned the "massive bombing of residential areas and critical infrastructure," adding that there had been "dozens of victims."
The minister said that the barrage showed Moscow was not interested in reaching a peace agreement with Ukraine.
"Russia’s only response to peace efforts is brutal attacks using hundreds of drones and missiles against Kyiv and other cities and regions," he said.
An ongoing Russian barrage has hit Ukraine with nearly 500 drones and 40 missiles, Ukrainian President Volodymyr Zelenskyy said in a post on the platform X.
He said that the primary target of the attack was the Ukrainian capital, Kyiv, with energy facilities and civilian infrastructure affected.
In his X post, Zelenskyy suggested that the attack indicated that Russia was not serious about pursuing peace negotiations with Ukraine and its allies.
"Russian representatives engage in lengthy talks, but in reality, [Russian 'Kinzhal' ballistic missiles] and [Iranian-produced 'Shahed' drones] speak for them," he said.
He said that Russian President Vladimir Putin and other Russian officials "do not want to end the war and seek to use every opportunity to cause Ukraine even greater suffering and increase their pressure on others around the world."
Zelenskyy called for the United States and Kyiv's European allies to carry out "truly strong steps" to put pressure on Moscow and to make swifter deliveries of air defense supplies.
"Diplomacy will not work without security," the Ukrainian president declared.
Two airports in southeastern Poland have reopened following a temporary closure, Poland's air navigation agency (PANSA) said on the platform X.
The Rzeszow and Lublin airports suspended operations earlier on Saturday after Polish and allied military jets scrambled in response to overnight Russian strikes on Ukraine.
The Polish armed forces' Operational Command (DORSZ) said in a post on X that no violations of Polish airspace had been detected.
The overnight Russian missile and drone strikes on Kyiv injured at least eight people, local authorities said Saturday.
The attack affected seven locations across the Ukrainian capital, according to a statement posted on Telegram by Tymur Tkachenko, head of Kyiv's City Military Administration.
A 16-year-old is reported to be among the injured.
In the city's Dnipro district, an 18-story residential building caught fire, while another 24-story residential complex was struck in the Darnytsia district.
Additional fires were reported in the Obolonskyi and Holosiivsky districts.
The strikes hit industrial and residential establishments in the wider Kyiv region, Ukraine's Emergency Service said.
Over 2,600 residential buildings, 187 nurseries and 138 schools in Kyiv have been left without heat after the attack the city administration said.
Poland has temporarily closed two of its airports following an overnight Russian attack on Ukraine.
Operations were suspended on Saturday at the Rzeszow and Lublin airports in Poland’s southeast after Polish forces scrambled fighter aircrafts over the Russian strikes, the Polish Air Navigation Services Agency said in a statement X.
The Russian military has carried out a large-scale overnight attack on the Ukrainian capital Kyiv, Ukrainian officials said in the early hours of Saturday.
"Explosions in the capital. Air defense forces are operating. Stay in shelters!" Kyiv's mayor Vitali Klitschko posted on Telegram.
Ukraine's air force activated a countrywide air raid alert, saying that drones and missiles were spotted over several regions in the country.
News agencies AFP and Reuters cited reporters on the ground as saying they heard loud explosions in the capital city.
The attack comes ahead of a weekend meeting between Ukrainian President Volodymyr Zelenskyy and US President Donald Trump, announced by Zelenskyy.
North Korea's Kim Jong Un said his country had shared "blood, life and death" with Russiaduring the course of the war in Ukraine.
In his new year's greetings to Russia President Vladimir Putin, Kim labeled 2025 as a "really meaningful year" for the relations between the two countries, which became even stronger due to them "sharing blood, life and death in the same trench."
Pyongyang sent troops to fight for Russia in its war in Ukraine, as well as sending artillery shells, missiles and long-range rocket systems.
Analysts say Moscow is in return providing North Korea with financial aid, military aid and food and energy supplies.
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Germany's Chancellor Friedrich Merz told Ukrainethat Europe was "unwaveringly by your side" as President Volodymyr Zelenskyy prepared for fresh talks in Washington on ending the war with Russia.
Merz commented on X after a phone call with the Ukrainian leader on Friday to discuss the next steps in the US-brokered peace plan.
"We stand unwaveringly by your side. A strong, coordinated European approach remains essential for peace, freedom, and security. The Berlin group is ready to help – closely coordinated with our US partners," Merz wrote.
Zelenskyy said he briefed Merz "on our work with the US envoys – we all recall the Berlin meeting format and the productivity that was achieved there."
"This is exactly how we continue to work. We agreed to continue acting together with Europeans," Zelenskyy added, in a statement on X.
The summit in Berlin in mid-December was the first major Ukraine meeting involving the US, Ukraine and leading Europeans in an EU country since US President Donald Trump's new push for a peace solution in November.
Zelenskyy said he was due to meet Trump in Florida on Sunday, as a 20-point peace framework and a security guarantee deal near completion.
Russia is increasingly using positions in Belarus for its attacks on Ukraine, Ukrainian President Volodymyr Zelenskyy said.
After talks with the entire military leadership on Friday, Zelenskyy wrote on Facebook that this included drone and missile attacks, which he said Moscow was using to bypass Ukraine's defensive lines.
"This is risky for Belarus," he wrote. "It is a pity that Belarus is surrendering its sovereignty to the benefit of Russian aggressive ambitions."
Zelenskyy said Russia had installed strike equipment on residential buildings in Belarus, which makes it difficult for Kyiv's military to mount a proactive defense.
"This is an absolute disregard for human life, Minsk should stop playing these games," he added.
Canadian Prime Minister Mark Carney spoke with President Volodymyr Zelenskyy on Friday and discussed the latest developments in ongoing peace talks, Carney's office said in a statement.
"The Prime Minister affirmed Canada's commitment to Ukraine throughout these negotiations and emphasized the need to maintain pressure on Russia to negotiate," the statement said.
Zelenskyy is set to meet with Trump in Florida this weekend. Earlier this week, he provided details about the 20-point plan that was agreed upon by US and Ukrainian envoys in Florida last weekend.
But some unresolved issues, including the nature and scope of security guarantees for Ukraine and the fate of the territories that Russia claims, remain.
At least two people were killed and six others seriously injured after Russian guided bombs hit the eastern Ukrainian city of Kharkiv, city mayor Ihor Terekhov said on Telegram.
A busy street in the city came under attack, with one of the bombs having struck vehicles. That left people trapped in their burning cars.
Russia has pummeled Ukraine's second-largest city with drones and bombs since the start of the war in 2022. Most strikes hit civilian targets.
Russian Deputy Foreign Minister Sergei Ryabkov accused Ukraine of trying to "torpedo" talks on US plans, as Kyiv and Washington work through some of the remaining differences of a 20-point peace framework.
"Our ability to make the final push and reach an agreement will depend on our own work and the political will of the other party," Ryabkov said in comments to Russian state TV.
"Especially in a context where Kyiv and its sponsors — notably within the European Union, who are not in favour of an agreement — have stepped up efforts to torpedo it," he added.
Ukrainian President Volodymyr Zelenskyy said he plans to meet with US President Donald Trump this Sunday in Florida.
Zelenskyy earlier posted to social media that a meeting would take place in the coming days (see below).
But Ukrainian media and others earlier reported a meeting between the two leaders was likely going to take place on Sunday, at Trump's Mar-a-Lago residence in Florida.
Trump is spending his Christmas break there.
"This meeting is specifically for the purpose of finalizing everything as much as we can," Zelenskyy said.
Kyiv and Washington have worked up a 20-point peace plan that has been sent to Russia.
The meeting between Zelenskyy and Trump comes after a flurry of diplomatic activity last weekend in Miami.
DW traveled to Ukraine's occupied Donetsk region to speak with residents living under Russian aggression since 2014. After a decade of conflict, many say they remain resolved to hold on to their freedom.
Ukrainian energy providers in the Black Sea port of Odesa reported two power supply facilities were damaged in Russian drone attacks on the coastal city.
Teams were working to restore power to Odesa residents, according to regional military administrative chief Sergei Lysak.
"Today, the enemy attacked our city again," he said in remarks carried by Ukrainian agency Ukrainski Novini, describing the attack as a drone strike and adding he had no reports of casualties.
Russia has been escalating its attacks on Odesa for several weeks, including attacks on its port facilities, an apparent attempt to degrade Ukraine's access to the Black Sea.