Defense Secretary Ashton Carter said U.S. and European sanctions aren't enough to force Russia to back down in Ukraine and must be bolstered, including with more allied military exercises.
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Russia's War Against Ukraine
Bloomberg: Carter says sanctions alone aren’t deterring Russia in Ukraine
Joint Chiefs of Staff Martin Dempsey (L) and U.S, Secretary of Defense Ash Carter speak to the media during a briefing at the Pentagon April 16, 2015 in Arlington, Virginia.
