President Trump is again amping up his trade threats, unveiling a new batch of letters to country leaders outlining tariffs on goods imported from their countries beginning in August. The highlight of his letter barrage late Wednesday was his announcement of a coming 50% tariff on goods from Brazil in a letter sent to its president,

"Any measure to unilaterally raise tariffs will be responded to in accordance with Brazil's Economic Reciprocity Law," Lula's office said in a statement. (Reporting by Ricardo Brito; Writing by Isabel Teles;

China warned the Trump administration on Tuesday against reigniting trade tension by restoring tariffs on its goods next month, and threatened to retaliate against nations that strike deals with the United States to cut China out of supply chains.

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

Instead of viewing tariffs as part of a broader trade policy, President Trump sees them as a valuable weapon he can wield on the world stage.