President Donald Trump announced Thursday that Canada was no longer welcome to his newly established Board of Peace.

In a statement posted on Truth Social, Trump rescinded Canada's invitation, informing Canadian Prime Minister Mark Carney that his country could no longer join the "most prestigious Board of Leaders ever assembled."

"Dear Prime Minister Carney: Please let this Letter serve to represent that the Board of Peace is withdrawing its invitation to you regarding Canada’s joining, what will be, the most prestigious Board of Leaders ever assembled, at any time," Trump wrote.

Trump unveiled the board during a speech and signing ceremony Thursday at the World Economic Forum in Davos, Switzerland, with leaders from Latin America, Europe, the Middle East, and Central and Southeast Asia joining him on stage.

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The president's rebuff came after he said Wednesday that the United States should control Greenland to build a large-scale "Golden Dome" missile defense system, which he said would also protect Canada, which he argued depends on U.S. security.

"We're building a Golden Dome that's going to, just by its very nature, going to be defending Canada. Canada gets a lot of freebies from us, by the way. They should be grateful also," Trump said during the forum in Davos.

"But they're not. I watched your prime minister yesterday. He wasn't so grateful. They should be grateful to us, Canada. Canada lives because of the United States. Remember that, Mark, the next time you make your statements," he said, referring to remarks Carney made earlier this week.

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While Carney did not mention Trump by name, he warned in his remarks that the rules-based international order is breaking down as "great powers" increasingly wield economic and security leverage to coerce allies.

The prime minister argued that "middle powers" like Canada must heed the "wake-up call" that compliance does not guarantee safety, urging instead a strategy focused on diversification, collective action and respect for sovereignty.

Trump said he will chair the new peace board, which will also feature senior political, diplomatic and business figures, including his son-in-law Jared Kushner, Secretary of State Marco Rubio, U.S. Special Envoy Steve Witkoff and billionaire Marc Rowan.

The president has invited Russia, Belarus, France, Germany, Vietnam, Finland, Ukraine, Ireland, Greece, Israel and China, to join the board.

Fox News Digital's Ashley Carnahan contributed to this report.

Video shows the moment a female student chased a classmate inside a Detroit high school classroom while allegedly wielding a box cutter as a teacher attempts to intervene.

Detroit police said the incident happened inside a classroom at Denby High School, FOX 2 in Detroit reported.

Officials said it is unclear what led to the confrontation, which was captured on video circulating online.

The video begins with a student wearing a blue beanie and headphones pointing at another student wearing a face mask.

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As the masked student approaches, the other student backs away before turning and running through the classroom, knocking into desks as the two move through the room.

After the student in the blue beanie flees the classroom, the other student approaches the doorway, where a teacher attempts to stop her by using a chair to block the exit.

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An object, appearing to be a box cutter, can be seen falling from the student’s hand. She later retrieves the object before running into the hallway.

One student can be heard asking, "Is that a pocketknife?" as the student runs down the hallway and out of sight. Faculty members could also be seen chasing after the student.

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In a statement obtained by FOX 2, the school district confirmed that a student brought a box cutter to campus and attempted to attack another student.

"There were no injuries associated with the incident," the statement said. "The student has been arrested and will not be returning to Denby or another district school. Additional police presence will be at the school tomorrow."

Fox News Digital also reached out to the school district.

The Detroit Police Department has opened an investigation into the matter, which remains ongoing.