The trade war chaos that engulfed the early months of President Donald Trump’s second term looked set to return Monday as he threatened two major U.S. trading partners with higher duties ahead of a key negotiating deadline. Shortly after noon Monday, Trump published two letters addressed to Japan and South Korea threatening them with 25% duties, with higher ones for items deemed to have been trans-shipped through their countries. Transshipping refers to offloading goods from one mode of...