NATO steps up Ukraine mission in response to Russia
Clip: 07/29/2015 | 2m 44s
There's been a spike this year in Russian air incursions near NATO countries, including the U.S. NATO countries have stepped up military exercises in Ukraine and across the Baltic states in response to Russia's actions. Gwen Ifill reports.
Aired: 07/29/15
Expired: 08/28/15
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