President Donald Trump said at least seven countries can expect tariff letters on Wednesday morning, as he ramped up pressure on nations to strike deals with the United States by saying his new August 1 deadline would not be extended.

President Donald Trump vowed to push forward with his aggressive tariff regime in the coming days, stressing he would not offer additional extensions on country-specific levies set to now hit in early August while indicating he could announce substantial new rates on imports of copper and pharmaceuticals.

President Trump on Monday said the U.S will impose 25% tariffs on goods from South Korea and Japan by Aug. 1, while also threatening to hit a dozen other nations with steep import duties by next month.