A police officer looks at a northern white rhino, only three of its kind left in the world, as it moves in an enclosed and constantly protected perimeter ahead of the Giants Club Summit of African leaders and others on tackling poaching of elephants and rhinos, Ol Pejeta conservancy near the town of Nanyuki, Laikipia County, Kenya, April 28, 2016. PHOTO BY REUTERS/Siegfried Modola