China signed a long-awaited, 30-year deal on May 21, 2014 to buy Russian natural gas worth 400 billion US dollars in a financial boost to the diplomatically isolated Russian President Vladimir Putin. [Russia's President Vladimir Putin, background left, and China's President Xi Jinping, background right, Russian Gazprom CEO Alexei Miller, foreground left, and China's CNPC head Zhou Jiping, foreground right]
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