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Nuclear Security Summit
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.
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.