Harold Hongju Koh is Sterling Professor of International Law at Yale Law School.

Koh began teaching at Yale Law School in 1985 and in 1993 was named Gerard C. and Bernice Latrobe Smith Professor of International Law. He was the school's 15th dean from 2004 to 2009.

From 2009 to 2013, Koh was the 22nd legal adviser of the U.S. Department of State. From 1998 to 2001, he served as assistant secretary of state for democracy, human rights and labor.

Before joining Yale, Koh practiced law at Covington and Burling and at the Office of Legal Counsel at the Department of Justice. In addition, he served as a law clerk for Justice Harry A. Blackmun of the United States Supreme Court and Judge Malcolm Richard Wilkey of the U.S. Court of Appeals for the D.C. Circuit.

Koh's books include The National Security Constitution: Sharing Power after the Iran-Contra Affair; Transnational Legal Problems; Deliberative Democracy and Human Rights, co-written with Ronald C. Slye; and Transnational Litigation in United States Courts. He has also written over 175 law review articles and legal editorials.

Last Updated: July 4, 2017