http://abcnews.go.com/blogs/politics/2011/10/japanese-government-nixed-idea-of-obama-visiting-apologizing-for-hiroshima/
https://web.archive.org/web/20150310203658/http://abcnews.go.com/blogs/politics/2011/10/japanese-government-nixed-idea-of-obama-visiting-apologizing-for-hiroshima/
《ウィキペディアの当該箇所》
Viewing cable 09TOKYO2033, AMBASSADOR'S AUG 28 MEETING WITH VFM YABUNAKA PART
http://wikileaks.org/cable/2009/09/09TOKYO2033.html