U.S. President Donald Trump on Tuesday said he would impose a 50% tariff on imported copper and soon introduce long-threatened levies on semiconductors and pharmaceuticals, broadening his trade war that has rattled markets worldwide.

Copper entering the US from other countries is set to face a new tax of 50%, President Donald Trump has said. The decision carries through on tariff threats he made earlier this year, when he ordered an investigation into how imports of the metal were affecting national security.

Trump announces US-India trade deal progress, excluding India from tariff ultimatum, but warns of potential 10% tariff under BRICS membership.

On Monday, the White House said that Trump viewed the Brics as a growing threat to American interests and pledged to take all necessary steps to ensure the US is fairly treated on the world stage.