Donald Trump's social media sledging isn't doing much for the mood on Wall Street.
The Dow Jones industrial average is expected to fall by 136 points at the open, or around 0.5%.
America's increased isolation on the world stage is worrying traders, says Craig Erlam of City firm OANDA.
While Trump has at times appeared friendly with certain other heads of state in the past, the relationships have at least appeared to have become more hostile since tariffs were imposed on the European Union, Canada and Mexico by the US last week.
อันนี้ ล่าสุด เมื่อ 8 นาทีที่แล้ว
