Dutch Prime Minister Mark Rutte, right, points towards a symbolic stick as he hands over the chair to U.S. President Barack Obama, center, during the closing session on the last day of the Nuclear Summit in The Hague, Netherlands, Tuesday, March 25, 2014. Thirty-five countries pledged Tuesday to turn international guidelines on nuclear security into national laws, a move aimed at preventing terrorists from getting their hands on nuclear material. Tuesday's initiative following a two-day summit of leaders also commits countries to open up their security procedures to independent review, a further step toward creating an international legal framework to thwart nuclear terrorism, said a joint statement from the Netherlands, the United States and South Korea. (AP Photo/Frank Augstein, POOL)