The Nuclear Threat Initiative protects lives, the environment and our quality of life now and for future generations. 

Every day, we work to prevent catastrophic attacks with weapons of mass destruction and disruption—nuclear, biological, radiological, chemical and cyber. 

Global Nuclear Policy

Working with leaders, partners, and citizens from around the world to develop policies, capacity, and political leadership to reduce reliance on nuclear weapons, prevent their u...

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Balancing the promise of biotechnology with preventing the biological weapons threat

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Raising awareness, improving security and strengthening global standards to prevent dirty bombs.

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How We Make an Impact

NTI designs innovative threat-reduction projects that show governments the way and build momentum and support for action.

We work with presidents and prime ministers, scientists and technicians, educators and students, and people from around the world. We collaborate with partners worldwide. And we use our voice to raise awareness and advocate for creative solutions.

Your support today helps a build a safer world.


Our Team

Founded in 2001 by former U.S. Senator Sam Nunn and philanthropist Ted Turner, NTI is guided by a prestigious, international board of directors and a high-level advisory board. Sam Nunn is chief executive officer, and Joan Rohlfing serves as president. We rely on the generosity of donors to support our work.

Our leaders and experts from government, academia and policy are among the most effective on our issues.

Meet Our Experts

NTI’s board are experts in international security, business, science, diplomacy and international policymaking.

Meet Our Board

Reports, opinions, speeches, research and resources on nuclear, biological and chemical threats, missile delivery systems, terrorism and global nuclear policy.


Join Us

The dangers posed by weapons of mass destruction and disruption are among the most consequential facing the United States and the world. Reducing these dangers is challenging work. NTI is making a difference.

Get up to speed and take action to prevent the spread of nuclear, biological and chemical weapons.

Follow us on Social Media

Tweet, share, like, watch—and raise awareness about the threats we face.

Support NTI Today

By supporting NTI, you are investing in a safer, more secure, and more stable future.