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U.N. Secretary General Ban Ki-moon, foreground, gestures during an interview with the Euronews Television Channel at the former Semipalatinsk nuclear bomb testing center, 90 miles (144 kilometers) from Kurchatov, Kazakhstan, Tuesday, April 6, 2010. Ban arrived in Kazakhstan Tuesday, where he praised U.S. President Barack Obama's new nuclear weapons policy. (AP Photo/Alexander Zemlianichenko)