Washington, Jumada II 23, 1437, Apr 1, 2016, SPA -- US President Barack Obama received at the White House yesterday, Thursday, Presidents and representatives of countries participating in the Nuclear Security Summit Conference for 2016. The reception included a working dinner. The working dinner and reception were attended by head of the delegation of the Kingdom of Saudi Arabia to the Summit, Dr. Hashim bin Abdullah Yamani who is the President of King Abdullah City for Atomic and Renewable Energy. This summit comes after three sessions of the Nuclear Security Summit held previously in Washington in 2010, Seoul in 2012 and The Hague in 2014. --SPA 11:26 LOCAL TIME 08:26 GMT www.spa.gov.sa/w