U.S. Defense Secretary Ash Carter said the United States "will not rely on the Cold War playbook" in dealing with Russia, but instead will rely on a combination of military and non-military tools to counter Russian aggression in Ukraine.
Voice of America: Carter says US will not rely on ‘Cold War playbook’ with Russia
Secretary of Defense Ash Carter speaks to the media during a briefing at the Pentagon May 7, 2015 in Arlington, Virginia.