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Europe Revisited: A New Image, a New Role
Remarks By President Barack Obama In Prague
オバマ米大統領の「核なき世界」、前途多難との声が大勢
A World Free of Nuclear Weapons - WSJ.com

By GEORGE P. SHULTZ, WILLIAM J. PERRY, HENRY A. KISSINGER and SAM NUNN

http://d.hatena.ne.jp/d1021/20090404#1238849037

Nuclear Weapons and Foreign Policy (Norton Library (Paperback))

U.S. Nuclear Weapons Policy (Independent Task Force Report)