Experts expose the folly of US tariffs

Editor's note: US President Donald Trump has raised tariffs on Chinese goods up to 145 percent, while China has taken countermeasures with 125 percent duties on American imports. Beijing also announced that it would no longer respond to any additional tariff increases the US may impose on Chinese goods. Are Washington's trade policies fair and reasonable? Does the US still uphold the rules-based world order? Experts share their views.