Donald Trump warns China he won't back down on trade tariffs

US president says he expects to move ahead on plans to raise tariffs to 25% from 1 JanuaryDonald Trump has raised the stakes in the escalating global trade dispute between the US, China and some of America’s traditional allies ahead of a major gathering of world leaders this week.Ahead of the G20 meeting in Argentina, which begins on Friday, the US president used a newspaper interview to warn China that he expects to move ahead on the imposition of higher import tariffs on Chinese goods. C