Doubts rise over Ukraine, Russian separatist cease-fire

Aired: 9/5/2014 | 0:09:45 | Clip
From the NATO summit, world leaders expressed their support for the ceasefire between Ukraine and Russian separatists. However, previous peacemaking delays and further violence have given reason for doubt. Jeffrey Brown speaks with Nicholas Burns, former U.S. Ambassador to NATO, Michael McFaul, former U.S. Ambassador to Russia, and John Mearsheimer of the University.