Ukrainian President Volodymyr Zelenskyy has made an address to the nation vowing to keep fighting, even as Russia is believed to be moving ahead with a full-scale operation against the capital, Kyiv.

Zelenskyy released a video of himself apparently near the presidential office early on Saturday. He said he would stay in place and protect the country's independence.

He added that there has been a lot of false information online that he had called on the military to lay down its arms, and that he had evacuated. He denied such claims.

Ukraine's interior ministry says a high-rise apartment in Kyiv was hit on Saturday. Local media say it was a Russian missile attack.

The building is only about 5 kilometers from Independence Square in central Kiev. The densely populated area is home to schools and hotels.

Media say injuries were reported, and rescue operations are underway.

Ukrainian Foreign Minister Dmytro Kuleba posted a picture of the apartment on Twitter. He added a comment demanding that the world fully isolate Russia, expel its ambassadors, embargo its oil and ruin its economy.
He said, "Stop Russian war criminals."

The health minister said on social media that 198 Ukranians had been killed as a result of Russian aggression, including three children.

Kremlin officials have suggested Putin is ready to negotiate if Ukraine is willing to disarm.