Isabelle Williams

Senior Advisor, Global Nuclear Policy Program

Isabelle Williams joined NTI in 2007 and serves as senior adviser to the Global Nuclear Policy Program. As part of this work she helps coordinate the international strategy of the program, managing the work of NTI’s global partners who conduct various activities in their countries and regions to promote reducing reliance on nuclear weapons and reducing global nuclear risks. Her areas of focus also include NATO nuclear policy, UK nuclear policy, nuclear disarmament, and U.S.-Russia relations.

Williams came to NTI from the Partnership for Global Security, where she managed their next generation nonproliferation program and was previously a research associate at the Chemical and Biological Arms Control Institute where she focused on research relating to chemical weapons, biosecurity and bioterrorism preparedness and response. She also held successive positions at the International Institute for Strategic Studies in London. Williams holds a bachelor's degree and master's degree (Hons) in International Studies both from the University of Leeds, UK.


Building A Safe, Secure, and Credible NATO Nuclear Posture

Building a Safe, Secure, and Credible NATO Nuclear Posture addresses the security risks, credibility, and financial and political costs of maintaining NATO’s current nuclear posture, including forward-deployed U.S. nuclear weapons in Europe. The report urges U.S. and NATO leaders to re-evaluate whether storing nuclear weapons at multiple sites across multiple countries makes sense in light of today’s threats and escalating costs—and, importantly, whether the weapons are still required elements of NATO defense policy.

2017 NPT PrepCom: Sleepy Conference Masks Continuing Tensions

Over the past two weeks, delegations from states party to the Treaty on the Non-proliferation of Nuclear Weapons (NPT) met in Vienna for the first preparatory committee meeting (PrepCom) of the 2020 NPT review conference (RevCon) cycle.

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Security Council

Global Enterprise to Strengthen Non-Proliferation and Disarmament

NTI’s Global Enterprise to Strengthen Non-Proliferation and Disarmament offers an unofficial forum to foster dialogue, identify areas of agreement, understand areas of disagreement, and explore possible paths forward. The forum includes representation from more than 20 countries and the United Nations.
Amman Security Colloquim

Global Nuclear Policy Partners

NTI works with partner organizations around the world to develop policies, leadership and the global capacity—human and institutional—to reduce reliance on nuclear weapons, prevent their spread and ultimately end them as a threat to the world.
Nunn and Singapore Foreign Minister

Regional Leadership Networks to Reduce Nuclear Risk

Hundreds of leaders and highly respected experts from across five continents are members of NTI-sponsored regional networks dedicated to generating global momentum for reducing reliance on nuclear weapons and the risks they pose.
Former Senator Sam Nunn, former Secretary of State George P. Shultz, former Secretary of State Henry A. Kissinger and former Secretary of Defense William J. Perry.

Nuclear Security Project

The Nuclear Security Project is an effort led by former Secretary of State George P. Shultz, former Defense Secretary William J. Perry, former Secretary of State Henry A. Kissinger, and former Senator Sam Nunn to galvanize global support for and action on the vision of a world without nuclear weapons and the steps to get there.
Lancaster House-NSP

Building Mutual Security in the Euro-Atlantic Region

A Track II dialogue among distinguished former senior political leaders, senior military officers, defense officials, and security experts from Europe, Russia, and the United States
Younger Gen Task Force

Younger Generation Leaders Network on Euro-Atlantic Security

Launched in 2014, the Younger Generation Leaders Network on Euro-Atlantic Security (YGLN) is a project aimed at fostering dialogue and understanding among emerging leaders from the United States, Russia, Ukraine and Europe in order to rebuild trust and offer fresh ideas on how to improve the Euro-Atlantic security environment.
Europe flags

Euro-Atlantic Security Leadership Group (EASLG)

The Euro-Atlantic Security Leadership Group (EASLG) operates as an independent and informal initiative, with participants who reflect the diversity of the Euro-Atlantic region from the United States, Canada, Russia, and fifteen European countries.