Biden and Putin speak on the phone as tension mounts over Ukraine

President Biden and Russian President Vladimir Putin spoke on the phone for nearly an hour amid growing concern over Moscow’s military buildup along the Ukrainian border. The two world leaders exchanged warnings, with President Biden telling Putin that the U.S. will act “decisively” if Russia invades Ukraine. CBS News political contributor and White House reporter for The Washington Post, Sean Sullivan, joins CBSN to discuss the high-stakes call. CBSN is CBS News’ 24/7 digital streaming news service featuring live, anchored coverage available for free across all platforms. Launched in November 2014, the service is a premier destination for breaking news and original storytelling from the deep bench of CBS News correspondents and reporters. CBSN features the top stories of the day as well as deep dives into key issues facing the nation and the world. CBSN has also expanded to launch local news streaming services in major markets across the country. CBSN is currently available on and the CBS News app across more than 20 platforms, as well as the Paramount+ subscription service. Subscribe to the CBS News YouTube channel:​
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