10/16/2009 05:12 am ET | Updated May 25, 2011

Is Afghan Gov't Coming To Aid Of Bombers? One Suspect May Have Ties To Defense Ministry

It's what American soldiers call a security bubble. To Afghan shopkeepers and their children it's a chance for a normal life. In a string of villages south of Kabul, U.S. troops are providing security in return for help in hunting the Taliban, reports CBS News national security correspondent David Martin.

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