Primary Outlet: WBAL (Baltimore MD)Broadcast Date: Saturday, May 21, 2011 - 8:30amProgram: C4 ShowBroadcast Type: interviewBroadcast Format: radioScholar: Preble, Christopher A.Subjects: President Obama's speech on the Middle EastResearch Area: Foreign Policy and National SecurityLink: http://www.cato.org/multimedia/radio-highlights/christopher-preble-discusses-oba…