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

President Donald Trump announced a 50-percent tariff Wednesday targeting Brazil as he blasted the trial of the country's ex-leader, and said a US "national security" levy on copper would begin in August.

US President Donald Trump announced a 50 percent tariff Wednesday targeting Brazil as he blasted the trial of the country's ex-leader, while widening a push to secure more bilateral trade

U.S. Secretary of State Marco Rubio met counterparts in Southeast Asia on Thursday during his first visit to Asia since taking office, reassuring them it is a priority for Washington despite President Donald Trump's tariff offensive.

Secretary of State Marco Rubio met counterparts in Southeast Asia during his first visit to the region since taking office.

Sweeping tariffs set to be imposed by President Donald Trump next month may cast a pall over his top diplomat's first official trip to Asia

U .S. trading partners are weighing responses after President Donald Trump’s latest action on tariffs sparked a stock market selloff Monday.

In letters so far to 14 countries, including smaller exporters to the United States such as Serbia, Thailand and Tunisia, Trump hinted at opportunities for additional negotiations, even while warning that reprisals would draw a like-for-like response.

Trump's top trade negotiators have pushed deadlines and sent tariff letters after failing to reach Trump's 90 trade deals in 90 days target.