Forty-seven countries and three international organizations participated in the first Nuclear Security Summit , held in Washington in 2010 at the initiative of President Obama . The aim of the summit was to improve worldwide nuclear security by enhancing cooperation and to make concrete agreements aimed at better securing nuclear materials and facilities . The results of the summit were set down in the Washington Work Plan in the form of concrete plans and action points , and the Washington Communiqué , which contains commitments and declarations of intent from the participating countries
first Nuclear Security Summit
2010 Nuclear Security Summit
Nuclear Security Summit