President-elect Donald Trump took aim at Canada, Greenland and the Panama Canal in a series of social media posts on Christmas Day, suggesting the U.S. could take control of all three canals.

On his Truth Social platform, Trump wrote at the beginning of the long posts that he wished everyone a Merry Christmas, “including the wonderful soldiers of China who lovingly but illegally operate the Panama Canal.”

He referred to the American deaths during the construction of the canal more than 100 years ago, then added that the U.S. “will invest billions of dollars in ‘repair’ funds but will have absolutely no say in ‘anything.’

Trump then mocked Canadian Prime Minister Justin Trudeau, whom Trump referred to as “governor,” and suggested again that the U.S. could annex Canada as its 51st state.

He wrote: “If Canada became our 51st nation, its taxes would be cut by more than 60%, its businesses would immediately double in size, and it would have military protection like no other country in the world.”

Trump then continued his post by addressing “the people of Greenland who are needed by the United States for national security purposes and who want the United States to be there, and we will do that!”

Trump also said in another post that he had encouraged former professional ice hockey player Wayne Gretzky to run for prime minister of Canada, but that Gretzky was “not interested.”

In his posts Wednesday, Trump also mocked President Joe Biden as “a man who has absolutely no idea what he’s doing” and sent holiday greetings to “radical left-wing lunatics.”

The posts build on a series of messages Trump has delivered in recent weeks.

Trump recently hinted that his administration could gain control of the Panama Canal, criticizing the fees Panama charges for its use.

The U.S. helped build the important shipping canal in the early 1900s and controlled it until 1977, when it reached an agreement to eventually hand control over to Panama. The two countries shared operation of the canal until 1999, when Panama took full control of it under the agreement with the United States

In a formal announcement from his presidential transition team on Wednesday, Trump said he would nominate Kevin Marino Cabrera as U.S. ambassador to Panama, whom he accused of “ripping us off on the Panama Canal, far beyond their wildest dreams.”

Cabrera is a member of the Miami-Dade County Commission and the Miami-Dade International Trade Consortium.

Trump had floated the idea of ​​buying Greenland – which is part of Denmark – during his first term in office. But earlier this week he showed renewed interest in the issue when he announced in his statement that he had chosen Ken Howery as ambassador to Denmark.

Greenland Prime Minister Mute Egede rejected Trump’s comments about his country earlier this week.

As for Canada, Trump has also in recent weeks mocked Trudeau as Canada’s “governor” while warning against imposing tariffs on the country. He had also previously joked that Canada should become the 51st country. Fox News reported earlier this month that Trump also directly raised the possibility with Trudeau during a dinner at Mar-a-Lago.