The European Union has warned that its trade with the United States could be effectively wiped out if Washington makes good on its threat to slap a 30% tariff on goods imported from the bloc.

US President Donald Trump has announced that all imports from the EU and Mexico will have a 30% tariff as of August 1. He sent letters to EU President Ursula von der Leyen and Mexico’s President Claudia Sheinbaum informing them of the new rates, which were also posted on his Truth Social account on Saturday.

The EU says the U.S. is resisting efforts to strike a trade deal and warned of countermeasures if no agreement is reached with U.S. by Aug. 1.