Russia-Ukraine updates: Putin suspends key US-Russia nuclear treaty in speech denouncing West

Denise Brown, the United Nations Resident Coordinator in Ukraine, traveled to the Ukrainian cities of Kherson and Mykolaiv over the weekend to get an update on the humanitarian issues affecting the southern part of the country, according to the U.N.

Although repairs to the area's water system are finally able to commence, there is still a lot of work to be done to help the people in those cities, the U.N said.

"We continue to be concerned about the plight of civilians in Ukraine especially as winter sets in," a U.N. spokesperson said in a statement.

Some heating points have already been established in Mykolaiv to help people who cannot heat their homes, according to the U.N.

"Aid workers are providing supplies and generators to make these places functional," the U.N. said in a statement.

The agency added that donations and funding for humanitarian efforts are critical as the cold weather sets in.

All of Ukraine's regions are now connected to the European Union's energy system and all three nuclear power plants located in the Kyiv-controlled area are working, CEO of Ukrenergo grid operator Volodymyr Kudrytskyi announced.

"In one to two days, they will reach their normal planned capacity, and we expect to introduce planned rolling blackouts instead of emergency outages," Kudrytskyi said.

Power is slowly returning to all Ukrainian cities, but blackouts and emergency shutdowns continue. Power issues are the worst in Kyiv, Kirivigrad, Dnipropetrovsk, Kharkiv, Poltava and Lviv, according to Kudrytskyi.

Kyiv's critical infrastructure receives electricity, the water supply is fully restored and heating is being restored, but 50% of residential houses remain without power. Only one-third of houses currently have heating, according to the mayor.

-ABC News' Will Gretsky

Russian President Vladimir Putin met with more than a dozen mothers of Russian soldiers fighting in Ukraine, telling those who had lost sons that he and the entire leadership shared their suffering.

Putin said he has no regrets about launching what he calls Russia's "special military operation" against Ukraine.

-ABC News' Tanya Stukalova

Russian authorities have developed a sophisticated system to suppress any reporting of protests by journalists and independent monitors, according to a new report released by Amnesty International.

These restrictions have increased since the beginning of the war in Ukraine. The report documented dozens of cases of unlawful obstruction of journalists and monitors during public protests, including arbitrary arrests, use of force, detentions and heavy fines.

“We can see that the Russian authorities are hellbent not only on preventing and severely penalizing any protest, however peaceful, but also on minimizing any public awareness of it,” said Natalia Prilutskaya, Amnesty International’s Russia researcher.

-ABC News' Guy Davies