But perhaps the biggest casualty of Trump's tariffs could well be Asia's e-commerce giants - as well as the American companies that rely on Chinese sellers and marketplaces. In a surprise move this week, Trump ditched the "de minimis" rule which exempted parcels under $800 from customs duties.

Southeast Asian countries breathed a sigh of relief on Friday after the U.S. announced tariffs on their exports that were far lower than threatened and levelled the playing field with a rate of about 19% across the region's biggest economies.