He said this after a telephone conversation with the leaders of NATO member countries.
US President Joe Biden made the announcement after a phone call with NATO leaders, CNN reports.
He believes that his Russian counterpart Vladimir Putin has decided to invade Ukraine. “At this point, I am convinced that he has made a decision,” Biden said.
He previously said he did not think the Russian leader had made such a decision, but acknowledged that his understanding of Putin’s thinking was too limited.