Since the 2014 Nuclear Security Summit in The Hague, Netherlands, participating States have reported a number of substantial actions and achievements that – individually and collectively – have strengthened nuclear security implementation at the national, regional, and international levels and built up the global nuclear security architecture.

Taken together, several common themes emerge.  Over 40 Summit countries have engaged in capacity building, whether through training, Centers of Excellence, or exercises.  Over 30 countries have updated national laws, regulations, or structures relating to nuclear security.  Over 20 countries have held or invited peer review missions, either bilaterally or through the International Atomic Energy Agency’s (IAEA) International Physical Protection Advisory Service.  Three more countries – China, India, and Jordan – have pledged to strengthen nuclear security implementation through subscribing to the 2014 Joint Statement on Strengthening Nuclear Security Implementation (INFCIRC 869), bringing the total number to 38.  Eighteen countries have taken steps to increase the security of radioactive sources.  Seventeen countries have been involved in removal or disposal of nuclear materials, or minimization of highly enriched uranium (HEU).  Sixteen countries have ratified nuclear security treaties or taken particular steps to implement them.  Fifteen countries have carried out physical security upgrades or acquired security or detection equipment.  A dozen countries have joined or launched new international or regional structures to support nuclear security cooperation.  Twelve countries have indicated their financial contributions to support bilateral or international cooperation in nuclear security.  And 10 countries noted steps taken to support or implement United National Security Council Resolution 1540.  These represent tangible, practical steps towards locking down nuclear and other radioactive material and building up the global nuclear security architecture.