The president has published just 22 letters, many to minor trading partners like Brunei, Moldova and Sri Lanka.

By David Lawder, Andrea Shalal and Julia PayneWASHINGTON/BRUSSELS (Reuters) -U.S. President Donald Trump launched his global tariff assault into overdrive on Wednesday, announcing a new 50% tariff on U.

The sector-specific tariffs are putting pressure on businesses and foreign nations as they try to navigate Trump's constantly evolving trade agenda.

Trump announced plans to impose tariffs on pharmaceuticals, as well as a 50% tariff on copper imports, during a cabinet meeting in Washington hours earlier. “These are obviously very concerning developments,

And the tariff threat is back. President Trump has once again threatened to impose heavy tariffs on pharmaceutical imports that will possibly be implemented after a year and a half. Nonetheless, the market reaction to the same was pretty calm this time around,