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U.N. Secretary-General Ban Ki-moon addresses the students at the Bogazici University in Istanbul, Turkey, Friday, May 21, 2010. Ban Ki-moon on Friday praised Turkey's contributions to world peace but encouraged it to be more active in solving its own conflicts with Armenia and Cyprus. Turkey said Monday it would not ratify a deal to normalize ties with Armenia until Armenian forces were withdrawn from the Nagorno-Karabakh enclave in Azerbaijan. (AP Photo/Ibrahim Usta)