Robert Ludlum's (Tm) the Bourne Retribution

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"Bourne's friend Eli Yadin, head of Mossad, learns that Ouyang Jidan, a senior member of China's Politburo, and a major Mexican drug lord may have been trafficking in something far more deadly than drugs. Yadin needs Bourne to investigate. Bourne agrees, but only because he has a personal agenda: Ouyang Jidan is the man who ordered Rebeka--one of the only people Bourne has ever truly cared about--murdered. Bourne is determined to avenge her death, but in the process he becomes enmeshed in a monstrous world-wide scheme involving the Chinese, Mexicans, and Russians."--Amazon.com.