Nations that have become dependent on China’s supply of key imports, and on Chinese markets for their exports, are particularly vulnerable: when disagreements arise, China simply delays the first and blocks the second. Notable cases include China’s abrupt cessation of all exports of rare metals to Japan in 2010 (to persuade Japan to return several Chinese fishermen it had detained); its zeroing out of salmon purchases from what had been Norway’s number-one market in 2011 (to punish Norway for the Nobel Peace Prize committee’s selection of a noted Chinese dissident, Liu Xiaobo); and its
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