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About the Nuclear Security Enterprise

The strategic environment has changed with the expanding capability of world actors. The future environment is less predictable and demands our national deterrence strategy accounts for the nature of this uncertainty.

NNSA's core missions include maintaining the nuclear stockpile, monitoring and promoting nonproliferation, powering the nuclear Navy, and responding to nuclear and radiological emergencies.

President Donald J. Trump directed the Secretary of Defense to initiate a new Nuclear Posture Review to ensure the nation's nuclear deterrent is modern, robust, flexible, resilient, ready and appropriately tailored to deter 21st century threats and reassures allies.

NNSA's plans to ensure the safety, security, and effectiveness of the U.S. nuclear weapons stockpile.

NNSA's plans and programs to prevent the proliferation of nuclear weapons, counter the threat of nuclear terrorism, and respond to nuclear and radiological incidents around the world.

Faces of the Nuclear Security Enterprise

A deeper look at the Nuclear Security Enterprise

On Deterrence

Naval Reactors

Lawrence Livermore National Lab

Los Alamos National Lab

Sandia National Labs


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Department of Defense
The mission of the Department of Defense is to provide the military forces needed to deter war and to protect the security of our country.
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