Headline: Why Does U.S. Pay to Protect Prosperous Allies?Publication Date: Wednesday, February 8, 2012Primary Source: Real Clear WorldOther Sources: CNN.comOrange County RegisterType: op-edFormat: New MediaNature of Mention: authoredScholar: Preble, Christopher A.Research Area: International Economics and DevelopmentSubjects: military budgetsAttached Files: Real clear world - Preble_2.pdf