Basically, a deeply insulting form letter sent out to the other heads of state with just the country, head of state and tariff amounts changed. All being published on Truth Social.
The big ones of the EU, India and Taiwan yet to come. Vietnam and the UK already caved and the discussions with the three biggest trading counter parties of Canada, Mexico and China are ongoing.
The ASEAN nations of Malaysia, Indonesia, Thailand, Cambodia, Laos, Vietnam, Philippines, and Myanmar etc. all enjoy tariff-free trade with China as well as Japan, South Korea, Australia and New Zealand through the RCEP trade agreement. Trump is cutting the US off from the fastest growing region in the world.
The world has to learn that the West doesn't play by its own rules. It just tore up the rules book when they were losing. Just the way Israel and the US bombed Iran without any reason. Now any country can bomb another country on the delusion that the other country is a potential threat.