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Putin vows to defend illegally seized regions in Ukraine
9m 11s
Russian President Vladimir Putin sharply escalated the war in Ukraine Friday, signing treaties to illegally annex four regions and vowing to defend the newly seized territory by "all available means." It all happened at the same time as one of Russia’s deadliest strikes on civilians. Fiona Hill of the Brookings Institution joined Nick Schifrin to examine Putin’s nuclear threats and annexation.