US secretary of state Hillary Clinton (C) looks at her mobile phone after attending a Russia - US meeting on the sidelines of the 43rd annual Association of South East Asian Nations (ASEAN) Ministering Meeting in Hanoi on July 23, 2010. Asia-Pacific's biggest security dialogue convenes in Vietnam with ructions over North Korea and friction between the United States and China likely to dominate proceedings. AFP PHOTO / POOL / Na Son Nguyen (Photo credit should read Na Son Nguyen/AFP/Getty Images)
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