（原标题：Exclusive: U.S. Has De Facto Left the WTO, Other Members Have to Move Forward: Former WTO DG） By Harry Wu, 21st Century Business Herald, SFC In the blink of an eye, the World Trade Organization (WTO) Appellate Body has been incapacitated for nearly six years. In 2017, the United States adopted a series of unilateralist and trade protectionist measures that eroded and damaged the WTO's basic principles, maliciously blocking appointments to the Appellate Body. On December 11, 2019, the WTO Appellate Body ...