Experts

Ashley Deeks

Fast Facts

  • Served in the Biden Administration as White House associate counsel
  • Member, U.S. State Department Advisory Committee on International Law
  • Member, board of editors, American Journal of International Law
  • Senior fellow, Lieber Institute for Law and Land Warfare
  • Expertise on international law and litigation, national security law, terrorism

Areas Of Expertise

  • Foreign Affairs
  • American Defense and Security
  • War and Terrorism
  • Domestic Affairs
  • Law and Justice

Ashley Deeks is the Class of 1948 Professor of Scholarly Research in Law at the University of Virginia School of Law, which she joined in 2012 after two years as an academic fellow at Columbia Law School. Her primary research and teaching interests are in the areas of international law, national security, intelligence, and the laws of war. She has written articles on the use of force, executive power, secret treaties, the intersection of national security and international law, and the laws of armed conflict. She is a member of the State Department’s Advisory Committee on International Law, and she serves as a senior contributor to the Lawfare blog. Deeks also serves on the boards of editors of the American Journal of International Law and the Journal of National Security Law and Policy. She is the supervising editor for AJIL Unbound, and is a senior fellow at the Lieber Institute for Law and Land Warfare.

Deeks served in the Biden Administration as White House associate counsel and deputy legal adviser to the National Security Council. Before joining Columbia in 2010, she served as the assistant legal adviser for political-military affairs in the U.S. State Department’s Office of the Legal Advisor, where she worked on issues related to the law of armed conflict, the use of force, conventional weapons, and the legal framework for the conflict with al-Qaida. She also provided advice on intelligence issues. In previous positions at the State Department, Deeks advised on international law enforcement, extradition, and diplomatic property questions. In 2005, she served as the embassy legal advisor at the U.S. embassy in Baghdad, during Iraq’s constitutional negotiations. Deeks was a 2007–08 Council on Foreign Relations international affairs fellow and a visiting fellow in residence at the Center for Strategic and International Studies.

Deeks received her JD with honors from the University of Chicago Law School, where she was elected to the Order of the Coif and served as comment editor on the Law Review. After graduation, she clerked for Judge Edward R. Becker of the U.S. Court of Appeals for the Third Circuit.

Ashley Deeks News Feed

Companies working for the U.S. military invented duct tape. And Silly Putty. And undershirts. The military needed waterproof tape to seal ammunition boxes, a synthetic rubber substitute to compensate for rubber shortages, and something to protect uniforms from wear and tear. Military necessity drove these and other technological advances, which were tailored to the enemies the military was fighting and the nature of conflict at the time. The endless war against al-Qaeda and its associates has similarly fostered a range of technological inventions or advancements, driven by the nature of the foes America has been fighting for two decades.
Ashley Deeks War on the Rocks
On Friday, the Lawfare Podcast hosted a conversation on the wide-ranging policy implications of the U.S. strike that killed Iran’s Islamic Revolutionary Guard Corps’ leader Qassem Soleimani and Abu Mahdi al-Mohandes, deputy commander of Iraq’s quasi-official Popular Mobilization Forces and leader of the Iraqi militia and PMF Keta’ib Hezbollah.Today’s special edition episode leaves the policy debate behind to zero-in on the law behind the strike. Law of war and international law experts Scott R. Anderson, Bobby Chesney, Jack Goldsmith, Ashley Deeks and Samuel Moyn join Benjamin Wittes to discuss the domestic and international law surrounding the strike, how the administration might legally justify it, what the president might do next and how Congress might respond.
Ashley Deeks Lawfare
Assassination is prohibited by a U.S. executive order, says Ashley Deeks, a University of Virginia law professor who focuses on the laws of war. She thinks it is unlikely this meets the definition of an assassination: "A lawful killing during an armed conflict does not constitute an assassination," Deeks says. "As a legal matter, if he were intimately involved in planning and blessing these attacks, then that doesn't seem to render it as assassination."
Ashley Deeks NPR
So what level of accountability exists for classified decisions made in the interest of national security? Professor Ashley Deeks of the University of Virginia School of Law explores the issue in her new paper, “Secret Reason-Giving,” which is forthcoming in the Yale Law Journal.
Ashley Deeks UVA School of Law
A new Lawfare Institute e-book, "The United States and the Use of Force Against Iran,” is now available on Kindle. This compilation gathers in one place recent insight and analysis from our contributors on legal and policy issues related to potential U.S. military action against Iran. As tensions between Washington and Tehran escalate, these chapters—originally published as articles here on Lawfare—provide important context.
Ashley Deeks Lawfare