PoliticsNation with Al Sharpton 07/17/14

Heat signatures suggest missile was Russian

NBC’s Jim Miklaszewski and Jim Cavanaugh talk to Rev. Al Sharpton about the clues U.S. intelligence officials are using to determine who shot down a Malaysian jet with a surface-to-air missile. Heat signatures suggest that the weapon was Russian, but it's ... more Duration: {{video.duration.momentjs}}