Some of the U.S.’s minor trading partners are about to find out they’ll be facing tariffs of more than 10%, as President Donald Trump presses ahead with his effort to reshape global trade.

On July 7, Trump announced 25% tariffs on imports from Japan and South Korea, effective August 1. He also announced separate rates for a number of other countries. On Tuesday, he said letters would be going out soon to dozens of smaller countries notifying them their goods would face a tariff rate of over 10%.

The president has earned a reputation for bluffing on tariffs. But he has steadily and dramatically raised U.S. tariffs, transforming global trade.