A special unit of wildlife rangers demonstrate an anti-poaching exercise ahead of the Giant Club Summit of African leaders and others on tackling poaching of elephants and rhinos, at Ol Pejeta conservancy near the town of Nanyuki, Laikipia County, Kenya, April 28, 2016. (Photo by Siegfried Modola/Reuters)





A wildlife ranger strokes a northern white rhino, only three of its kind left in the world, ahead of the Giant 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 Siegfried Modola/Reuters)





A northern white rhino, only three of its kind left in the world, 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 Siegfried Modola/Reuters)





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 Siegfried Modola/Reuters)





A wildlife ranger plays with a small southern white rhino, 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 Siegfried Modola/Reuters)





Wildlife rangers stroke a northern white rhino, only three of its kind left in the world, 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 Siegfried Modola/Reuters)





A wildlife ranger keeps guard as a northern white rhino, only three of its kind left in the world, 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 Siegfried Modola/Reuters)





A special unit of wildlife rangers demonstrate an anti-poaching exercise 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 Siegfried Modola/Reuters)





Evgeny Alexandrovich Lebedev is the London-based Russian owner of Lebedev Holdings Ltd, which owns the Evening Standard, the Independent and the patron of the Giants Club Summit and British actress and model Elizabeth Jane Hurley stroke a northern white rhino, only three of its kind left in the world, 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 Siegfried Modola/Reuters)





A special unit of wildlife rangers demonstrate an anti-poaching exercise 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 Siegfried Modola/Reuters)





A special unit of wildlife rangers demonstrate an anti-poaching exercise 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 Siegfried Modola/Reuters)





A northern white rhino, only three of its kind left in the world, 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 Siegfried Modola/Reuters)





A special unit of wildlife rangers demonstrate an anti-poaching exercise 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 Siegfried Modola/Reuters)