Putin responds with national address after Biden's visit to Ukraine
From the Leopard mom uses her brains to escape lions in Kenya, and more of today's top videos series
 Tensions between the U.S. and Russia haven’t been more tense since the Cold War. Veuer’s Tony Spitz has the details.
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This leopard mom used her brain to get out of a sticky situation, check out the months of pl…
Russian President Vladimir Putin on Tuesday suspended Moscow's participation in the last remaining nuclear arms control pact with the United States.
