Ban Ki-moon, 69, has been the secretary-general of the United Nations since 2007. A South Korean, Ban spent his childhood in a war-torn country and later experienced its rebirth as an industrial power in Asia. His job never stops, so on Sundays he works, taking calls on his BlackBerry and responding to queries from his staff or heads of state. Ban lives with his wife, Yoo Soon-taek, 68, in a United Nations town house on Sutton Place, where visits from their three grown children and four grandchildren offer a break from the rigors of trying to solve the world’s problems.
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