Is there a way to reconcile interests of the US, Russia in Syria? Dr. Hahn’s Commentary for Russia Direct

For Dr. Gordon M. Hahn’s 5 October 2015 commentary for Russia Direct¬†please see Pavel Koshin, “Is there a way to reconcile interests of the US, Russia in Syria?,”¬†http://www.russia-direct.org/debates/there-any-way-reconcile-interests-us-and-russia-syria