How Trump’s Paris decision drove the top U.S. diplomat in China to quit

Watch Video JUDY WOODRUFF: Last year, former President Obama and China’s President Xi Jinping announced on the same day that the U.S. and China would join the Paris climate agreement, in an effort to forestall climate change through capping and reducing emissions. China’s participation was seen as key. It is the world’s largest emitter of carbon dioxide, with the United States running second. But on June 1, this month, President Trump announced his intention to withdraw from...

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