MFFF 　　Mixed Oxide Fuel Fabrication Facility
MIRV 　　Multiple Independently-Targetable Reentry Vehicle
MoU 　　Memorandum of Understanding
MOX 　　Mixed Oxide
MRBM 　　Medium Range Ballistic Missile
MTCR 　　Missile Technology Control Regime
NAC　　 New Agenda Coalition
NAM 　　Non-Aligned Movement
NATO　　 North Atlantic Treaty Organization
NFU　　 No First Use
NFWG　　 Nuclear Forensics Working Group
NGO 　　Non-Governmental Organization
NNSA　　 National Nuclear Security Administration
NNWS　　 Non-Nuclear-Weapon States
NPDI　　 Non-Proliferation and Disarmament Initiative
NPR 　　Nuclear Posture Review
NPT 　　Nuclear Non-Proliferation Treaty
NRC 　　Nuclear Regulatory Commission
NSAs 　　Negative Security Assurances
NSCG 　　Nuclear Security Contact Group

NSF　　  Nuclear Security Fund

NSG  　　Nuclear Suppliers Group

NSSC 　　Nuclear Security Training and Support Centres

NSSG　　 Nuclear Safety and Security Group
NTI 　　Nuclear Threat Initiative
NWFZ 　　Nuclear-Weapon-Free Zone
NWS 　　Nuclear-Weapon States
PMDA 　　Plutonium Management and Disposition Agreement

PSI　　 Proliferation Security Initiative