Nuclear Security Summit

A man adjusts a spotlight above the stage before world leaders' family picture during the Nuclear Security Summit in The Hague...A man adjusts a spotlight above the stage before world leaders' family picture during the Nuclear Security Summit in The Hague March 25, 2014.  REUTERS/Robin Van Lonkhuijsen/Pool (NETHERLANDS  - Tags: POLITICS)

Robin Van Lonkhuijsen/Reuters

The stage is set before world leaders have their family picture taken before the Nuclear Security Summit in The Hague, The NetherlandsRead more

Protestors with a radioactive sign painted on their faces pose during a demonstration on the first day of the two-day Nuclear Security Summit) in The Hague, Netherlands.

Patrick Post/AP

Protestors with a radioactive sign painted on their faces pose during a demonstration on the first day of the two-day Nuclear Security Summit in The Hague, Netherlands.

World Leaders Gather For Nuclear Security Summit 2014...AMSTERDAM, NETHERLANDS - MARCH 24: US President Barack Obama (L) and Prime Minister of the Netherlands Mark Rutte (C) visit the Rijksmuseum ahead of the 2014 Nuclear Security Summit on March 24, 2014 in Amsterdam, Netherlands. The Nuclear Security Summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism.

Jerry Lampen/Getty

Barack Obama, US president (left), and Mark Rutte, Netherlands prime minister (centre), meet in front of Rembrandt’s ‘The Night Watch’ in the Rijksmuseum in Amsterdam before the start of the 2014 Nuclear Security Summit. The summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism.