President Xi Jinping has spoken out against unilateral sanctions and trade barriers – reiterating China’s support for globalisation as the international economic environment turns more protectionist – in an article published on the opening day of a high-profile supply chain expo.Wednesday’s piece in Qiushi – the leading theoretical journal of the ruling Communist Party – compiles statements Xi has made on the topic since 2012.The article, titled “Unswervingly Advancing High-Level Opening Up”,...