About the Nuclear Security Enterprise
The strategic environment has changed with the expanding capability of world actors. The future environment demands a national deterrence strategy that takes this uncertainty into account.
NNSA's core missions include maintaining the nuclear stockpile, monitoring and promoting nonproliferation, powering the nuclear Navy, and responding to nuclear and radiological emergencies.
The Nuclear Posture Review is part of the overall National Defense Strategy. That strategy identifies the defense priorities that the nation must pursue to strengthen deterrence.