Philip Chase Bobbitt is an American author, academic, and lawyer. He is best known for work on military strategy and constitutional law and theory, and as the author of several books: Constitutional Fate: Theory of the Constitution (1982), The Shield of Achilles: War, Peace and the Course of History (2002), and Terror and Consent: The Wars for the Twenty-first Century (2008). He is currently the Herbert Wechsler Professor of Jurisprudence at Columbia University School of Law and Director of the Center for National Security at Columbia.