"Other trading partners observing these threats will have the same mistrust of the negotiation process," experts argue.

EU trade ministers have agreed that U.S. President Donald Trump’s 30% tariffs announced on the European Union are “absolutely unacceptable,” and they are studying a new set of countermeasures to respond to the move.

President Trump is threatening Mexico and the European Union, two of the largest U.S. trading partners, with 30% tariffs starting in August if they don't reach a trade deal with the U.S. CBS News MoneyWatch correspondent Kelly O'Grady breaks down what this means for U.

President Donald Trump on Saturday threatened duties of 30% on products from Mexico and the European Union, two of America’s biggest trading partners, in an ongoing tariff campaign that’s upended global trade since he retook office in January.

BRIDGEWATER, New Jersey (AP) — President Donald Trump on Saturday announced he’s levying tariffs of 30% against the European Union and Mexico. Trump announced the tariffs on two of the United States’ biggest trade partners in letters posted to his social media account.

President Donald Trump posted letters to the leaders of Mexico and the European Union, saying they had not done enough to head off the new tariffs.

President Donald Trump's 30% tariffs on European Union goods could drive up costs across the world's alcohol trade. The EU is eyeing retaliatory measures.

Donald Trump has proposed huge levies on Brazil, prompting an outspoken response from the CEO of Embraer, which builds vital regional airliners.