Russia-Ukraine updates: Putin says 'certain positive movements' in negotiations

Approximately 600 Russian missile launches have taken place since the invasion of Ukraine began on Feb. 24, a senior defense official said.

They could not corroborate any reports of the use of cluster munitions or thermobaric weapons.

Ukrainian air and missile defenses are still effective and in use, the official said, though the airspace over Ukraine is contested.

Both sides have taken losses to aircraft and missile defense inventories, the defense official added, and while they did not reveal exact numbers, they believe both Russia and Ukraine still have a majority of their air defense systems.

The official also said Russian forces are still trying to advance across the north and east of Ukraine but are being met with strong Ukrainian resistance. The convoy is still stalled.

-ABC News’ Matthew Seyler

Netflix is the latest company to suspend service in Russia, joining a growing list of Western businesses cutting ties with Russia in protest over the invasion of Ukraine.

The popular streaming service said on Sunday that it is entirely shutting down its service in Russia.

“Given the circumstances on the ground, we have decided to suspend our service in Russia,” a Netflix spokesperson told ABC News.

Variety reported reported on Sunday that Netflix had four Russian original programs in the works, including a crime thriller series directed by Belarus-born director Darya Zhuk.

Netflix's decision follows a list of Western companies suspending operations in Russia. Movie studios Warner Brothers, Sony Pictures and Disney, the parent company of ABC News, have dropped future movie releases in Russia.

Ikea, Mastercard, Visa and American Express have also suspended services to Russia. Microsoft and Apple have ceased all sales, including game consoles and phones, in the country as well.

-ABC News' Matt Foster

More than 1 million refugees from Ukraine have fled to Poland since the Russian invasion began on Feb. 24, Poland's Border Guard said on Sunday.

"This is a million human tragedies, a million people banished from their homes by the war," the Border Guard said in a statement on Twitter, noting that its latest tally was from 8 p.m. local time.

Earlier Sunday, Filippo Grandi, the U.N. High Commissioner for Refugees, said more than 1.5 million people have fled Ukraine to multiple neighboring countries since the Russian invasion began, including Romania, Hungary, Moldova and Slovakia.

-ABC News' Christopher Donato and Christine Theodorou

TikTok, owned by the Chinese technology company ByteDance, announced on Sunday that it is immediately suspending live streaming and new content on its platform in Russia.

The video-focused social networking service said the move was in response to Russia's parliament passing a law governing what it called "fake news."

"TikTok is an outlet for creativity and entertainment that can provide a source of relief and human connection during a time of war when people are facing immense tragedy and isolation," TikTok said in a statement. "However, our highest priority is the safety of our employees and our users, and in light of Russia's new 'fake news' law, we have no choice but to suspend live streaming and new content to our video service in Russia while we review the safety implications of this law."

The company said its in-app messaging service will not be affected by the move.

"We will continue to evaluate the evolving circumstances in Russia to determine when we might fully resume our services with safety as our top priority," the company said.

On Friday, Russia's parliament amended Russia's criminal code to prohibit the spread of "fake" information and to punish violators with fines or jail terms of up to 15 years.

Russian leaders have previously accused the United States and its Western allies of sowing discord among the Russian people by using social media to disseminate false information about its conflict in Ukraine.

-ABC News' Christine Theodorou