The financial market turmoil prompted by U.S. President Donald Trump's tweet-based escalation of the trade war is challenging regulators around the world -- not least in China.
After Trump suddenly said on May 5 via Twitter that he would raise tariffs on Chinese goods by the end of the following week, stocks in Shanghai and Shenzhen tumbled, wiping out hundreds of billions of dollars of market value even as Beijing's censors scurried to suppress mention of the U.S. president's latest declaration.
