It’s a possible sign that President Donald Trump’s wave of tariff letters is again raising concern among investors.

The U.S. has sanctioned Myanmar's military junta and refused to acknowledge its rule, so Mr. Trump's personal letter to its leader was welcomed, despite the subject.

Blunt letters dictating terms posted to social media and changes late in negotiations have left trading partners wondering what President Trump will do next.

Donald Trump surprised markets late Thursday with a letter announcing a 35% tariff on Canadian goods, but some notable industries such as energy could get some relief from the new threat.

President Donald Trump has again delayed a tariff deadline. His back and forth on the policy spurred TACO accusations. What does it mean?

President Donald Trump has sent tariff letters to ASEAN countries, with most charting lower duties except Malaysia. Andrea Heng and Susan Ng decode the tariff rates and the influencing factors his administration may have considered for Southeast Asian trade partners with Priyanka Kishore,

Trump’s new tariff letters have sent shockwaves across global markets as he targets 22 countries with tough new trade threats just weeks before the August 1 deadline. From close allies like Japan and South Korea to BRICS nations like Brazil and South Africa,

It shows that personal grudges rather than simple economics are a driving force in the U.S. leader’s use of tariffs.