President Donald Trump announced that the United States will impose a 50% tariff on all copper imports starting August 1. The decision threatens to disrupt a global supply chain for one of the key inputs for the American industry and a crucial commodity for the green technology transition.

The president’s tariff announcements suggest he has not backed away from his initial strategy, where even smaller trading partners will face tariffs.

The U.S.’s closest security allies in Asia, along with six Southeast Asian countries, have been given another three weeks to negotiate trade deals — or face higher tariffs.

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.

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.

Live updates and the latest news as Trump and Netanyahu meet at White House to discuss Iran and the U.S. sends tariff letters to trading partners.

Donald Trump's mooted 50% tariff on copper imports into America has sharply exacerbated what was already a dislocation between New York and London prices for the metal. The chart shows that since Trump's inauguration traders have been placing a greater premium on the COMEX contract,