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In this photo taken Tuesday, Dec. 3, 2013, a marksman in a helicopter hits a wild elephant with a pink-tipped tranquilizer-loaded dart during an elephant-collaring operation near Kajiado, in southern Kenya. Kenya Wildlife Service (KWS) and the International Fund for Animal Welfare (IFAW) fitted elephants with GPS-tracking collars enabling the monitoring of migration routes and to help prevent poaching. In an agreement reached at the African Elephant Summit in Gaborone, Botswana, over the past few days, key states where the illegal ivory trade flourishes, have pledged to take urgent measures to try to halt the illicit trade and secure elephant populations across Africa. (AP Photo/Ben Curtis)

U.S. Department of State

The Lessons of 1989: Freedom and Our Future