Nuclear SecurityDepartment of Energy
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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 Defense Secretary Jim Mattis 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.
Two related NNSA reports are the Stockpile Stewardship and Management Plan (SSMP) and Prevent, Counter, and Respond—A Strategic Plan to Reduce Global Nuclear Threats (NPCR).
Nuclear Security Enterprise in the News
Faces of the Nuclear Security Enterprise
NNSA's National Labs lead the world in innovation in national security applications. Eric Duoss, left, and Tom Wilson, engineers at Lawrence Livermore National Laboratory, use an additive manufacturing process called direct ink writing to develop an engineered “foam” cushion.
2/5HEAF Spherical Chamber
NNSA scientists and engineers are always testing, always experimenting to improve the materials and methods used in national security work. Here, Lawrence Livermore National Laboratory researcher Kevin Vandersall sets up an experiment in the 10-kilogram spherical firing chamber in the High Explosives Applications Facility.
Lawrence Livermore National Laboratory's Sean Brum installs one of the first opacity targets in the National Ignition Facility target chamber. Such experiments help scientists ensure the nation's nuclear stockpile is safe, secure, and effective.
4/5Leak Test Machine
Today’s workforce demands old-fashioned dedication, but with advanced technological, scientific and engineering experience and capabilities. Much of these are dependent upon young scientists and engineers who are excited to work for NNSA. Here, Daniel Perlstein of the Nevada National Security Site works on a leak test machine as he trains to become a packaging engineer.
5/5Source Physics Experiments
The Source Physics Experiment series and NNSA’s ongoing research and development at our national laboratories are key to strengthening national security. These efforts advance technical solutions for treaty monitoring by the United States and its partner nations.
The U.S. nuclear deterrent cannot exist without a resilient and effective nuclear weapons infrastructure.
U.S. nuclear capabilities make essential contributions to the deterrence of nuclear and non-nuclear aggression.
A deeper look at the Nuclear Security Enterprise
Powering the Nuclear Navy (U.S. Department of Energy)
Deputy Secretary Discusses NPR
Deputy Secretary of Energy Dan Brouillette discusses NNSA's role in the Nuclear Posture Review
Lawrence Livermore National Lab
The mission of the U.S. Department of State is to advance the national interests of the United States and its people.
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.