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Chinese President Jiang Zemin, center, accompanied by aides and bodyguards, waves to tourists after he floated in the Dead Sea near Ein Bokek, Israel on in this April 14, 2000 file photo. Zemin, 74, spends a few weeks each summer at a seaside haven where he and other officials swim in the polluted, green-blue Bohai Sea. (KEYSTONE/AP Photo/Lefteris Pitarakis)