WASHINGTON (AP) — President Donald Trump on Friday threatened a 100% tax on imports from any country that imposes a tax on digital services from United States companies.

In a post on social media, Trump took aim at European countries that he said are discussing “imminent” implementation of taxes on American companies.

The US president has repeatedly sought to use tariffs as a way to deter such taxes, but many countries are looking for revenues as their economies increasingly operate in digital realms that are dominated by American companies.