President Donald Trump has bestowed a royal nickname on himself: The Tariff King.

“I’m the tariff king and the tariff king has done a great job,” Trump pronounced Friday at a White House event on rural health care.

He used the monarchal moniker while talking about using the threat of tariffs on other countries in an effort to bring pharmaceutical costs down in the United States.

The remark also came minutes after the president declared that he “may” use tariffs to punish countries opposing his attempts to take control of Greenland.

“I may put a tariff on countries if they don’t go along with Greenland, because we need Greenland for national security,” he said.

He then correctly predicted, “In fact, that will end up being the story.”

Later that night, at about 10:30 p.m., Trump posted a black and white photo of himself on Truth Social underneath the words “Mister Tariff.” Less than a minute later, he posted the exact same photo, this time promoting himself to “The Tariff King.”

Saturday morning, Trump took his tariff threats a step further, declaring that he would be hitting eight European countries with tariffs on goods sent to the U.S. until “a Deal is reached for the Complete and Total purchase of Greenland.”