Mallory Stewart

Nonresident Fellow

Mallory Stewart is a Nonresident Fellow at the Stimson Center. Her areas of expertise include chemical and biological weapons law and policy, space security policy, U.S. missile defense, and nonproliferation and arms control law. Prior to joining Stimson, Stewart was the Deputy Assistant Secretary of State for Emerging Security Challenges and Defense Policy in the Bureau of Arms Control, Verification, and Compliance (AVC) at the U.S. Department of State. In that role, she was responsible for overseeing the Office of Emerging Security Challenges and the Office of Chemical and Biological Weapons Affairs.  Stewart joined the State Department in 2002 as an attorney in the Legal Adviser’s Office. In 2014, Stewart was a recipient of the Secretary’ of State’s Award for Excellence in International Security Affairs for her work on the international effort to eliminate Syrian chemical weapons. Ms. Stewart was a litigation associate at the law firm of Sullivan & Cromwell prior to joining the State Department.

She holds an A.B. from Harvard College and a J.D. from Stanford Law School.

Publications:

Center for Arms Control and Nonproliferation’s “Ask and Expert”/“Nukes of Hazard” podcast
Published on: May 12, 2017

Common Challenges to Diverse Security Threats: A Conversation with Mallory Stewart ASIL’s Nonproliferation, Arms Control & Disarmament Interest Group & the Dean Rusk International Law Center.
Published on: May 2, 2016

Key note address at the Atlantic Council’s discussion on “Space Weapons and the Risk of Nuclear Exchange.”
Published on: January 11, 2016

CSIS discussion on Attribution and Accountability for Chemical Weapons use in Syria
Published on: October 14, 2015

Brookings Institute panel on “The Search for International Consensus on Syria and Beyond”
Published on: April 9, 2015

Panelist and subsequent published presentation “Are Treaties Always Necessary? How U.S. Domestic Law Can Give Teeth to Non-Binding International Commitments.” Proceedings of the 2010 Annual Meeting (American Society of International Law) Vol. 104, International Law in a Time of Change (2010), pp. 189-193
Published on: March 26, 2010

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Report
The Nuclear Ban Treaty: A Legal Analysis

The recently adopted Treaty on the Prohibition of Nuclear Weapons (or the ‘ban treaty’) is not a viable legal vehicle for eliminating nuclear weapons; it does not establish international legal norms; and it might, depending on how it is implemented, do…

Announcement
Stimson Welcomes New Nonresident Fellows: James Borton and Mallory Stewart

The Stimson Center announced today the appointment of its newest class of Nonresident Fellows: James Borton and Mallory Stewart. “I am delighted to welcome our newest class of fellows to Stimson,” said Stimson President and CEO Brian Finlay. “James Bor…

Commentary
Twenty Years of the Chemical Weapons Convention- Where Do We Go from Here?

By Mallory Stewart This year marks the 20th anniversary of the entry into force of the Chemical Weapons Convention (CWC). This multilateral treaty bans the use, development, production, acquisition, stockpiling, or retention of chemical weapons. With 1…

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