NATO countries respond to Putin, prepare for war in Ukraine

Poland is bracing for Ukrainian refugees if Russia's invasion of separatist regions escalates into full-scale war, as Germany halts certification of the Nord Stream 2 pipeline.

SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP
Watch More on http://abcnews.go.com/
LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews
FOLLOW ABC News on TWITTER: https://twitter.com/abc

#ABCNews #NATO #Ukraine #Russia