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Russian President Vladimir Putin and Chinese President Xi Jinping enter the hall during a signing ceremony on May 20, 2026, in Beijing, China. (Getty Images)
Leon Martel was the author, with Herman Kahn and William Brown, of Hudson Institute's The Next Two Hundred Years: A Scenario for America and the Wo
Leon Martel was the author, with Herman Kahn and William Brown, of Hudson Institute's The Next Two Hundred Years: A Scenario for America and the World (William Morrow & Co, 1976).