NTI Nuclear Security Index
Building a framework for assurance, accountability, and action
Nuclear
The dangers are real.
We can create a safer world.
NTI offers solutions.
The dangers are real.
We have entered a new age where the risk of nuclear use—deliberately or by accident or miscalculation—is growing.
Regional tensions, the proliferation of nuclear weapons and materials to make them—along with terrorism and new technologies like cyber—mean the risk of a nuclear weapon or device being used is rising. At the same time, governments’ ability to manage increasingly complex global security risks is eroding.
12,000 Nuclear weapons in the world
9 Countries with nuclear weapons
22 Countries with weapons-usable nuclear materials potentially vulnerable to theft.
25+ Countries working in partnership with NTI and the U.S. Department of State to develop new approaches to nuclear disarmament verification.
We can create a safer world.
NTI’s innovative, pragmatic solutions reduce global dangers and catalyze lasting, systemic change.
We collaborate with governments and experts to generate actionable solutions, galvanize cooperation and demonstrate and de-risk solutions.
Here's what we're doing
Featured Projects
Nuclear Scaling Initiative
Catalyzing a new nuclear energy ecosystem
Global Dialogue on Nuclear Security Priorities
Strengthening nuclear security globally
The Critical Mass Project
Building a critical mass of public support to eliminate nuclear weapons risks.
International Partnership for Nuclear Disarmament Verification
Engaging a diverse group of states to develop innovative monitoring and verification solutions
Euro-Atlantic Security Leadership Group (EASLG)
Reduce security risks through practical solutions
Featured Experts
It's our focus every day.
NTI Young Voices: Angela Guo
Angela Guo is a high school student from Hong Kong currently studying at Phillips Academy Andover. She has spent the past year researching the impacts of nuclear testing on the Marshall Islands and recently published her first book, “At the Tide’s Mercy: Voices from the Marshallese Exodus”.
Weapons in Orbit: Reducing Risk in a New Era of Space Competition
1776 Eye Street, NW, Suite 1000, Washington, DC 20006
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10:00AM ET
5 Data Points You Should Know from the 2026 NTI Index
The NTI Nuclear Security Index
U.S. Nuclear Policies for a Safer World
Nuclear Facilities in Times of Crisis
