Barry R. Posen

Barry R. Posen is the Ford International Professor of Political Science at MIT and is director emeritus of MIT’s Security Studies Program. He is the author of Restraint: A New Foundation for U.S. Grand Strategy, Inadvertent Escalation: Conventional War and Nuclear Risks and The Sources of Military Doctrine.

Courting War

Despite claims to the contrary, the Trump administration wants regime change in Iran and is risking a full-scale war in order to get it.

  • Barry R. Posen

A New U.S. Grand Strategy

How to stop the United States from overreaching, overspending, and overcommitting. 

  • Barry R. Posen

Exit Strategy — Final Response

My aim is to advance the policy debate by presenting a new strategy—a genuine alternative

  • Barry R. Posen

Exit Strategy

How to disengage from Iraq in 18 months.

  • Barry R. Posen
with responses from
  • Barbara K. Bodine
  • Joseph R. Biden
  • Vivek Chibber
  • Russell D. Feingold
  • Randall Forsberg
  • Lawrence Korb & Brian Katulis
  • Helena Cobban
  • Christopher Preble
  • Eliot Weinberger
  • Nir Rosen
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