President Obama, accompanied by Dutch Prime Minister Mark Rutte, speaks during their joint news conference at the conclusion of the Nuclear Security Summit in The Hague on Tuesday. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

A column of Russian troops prepares to leave the checkpoint at a bridge over the Inguri River in Western Georgia, in October 2008, after securing the secession of Georgia's breakaway South Ossetia region. Levan Gabechava/Reuters/Landov hide caption

itoggle caption Levan Gabechava/Reuters/Landov

Signs advertise the type of meat sold in each section of the Green Market in Almaty, Kazakhstan. Sly06/Flickr hide caption

itoggle caption Sly06/Flickr