Trump said in a post to social media that, following a phone call with NATO Secretary-General Mark Rutte, "I agreed to a meeting of the various parties in Davos, Switzerland. As I expressed to everyone, very plainly, Greenland is imperative for National and World Security. There can be no going back -- On that, everyone agrees!"

At the World Economic Forum in Davos, French President Emmanuel Macron strongly criticised Donald Trump's aggressive trade tactics, particularly the proposed 200 percent tariffs on France. Macron asserted that Europe would not yield to intimidation.

As the EU calls Trump's threat to tariff allies for rejecting his bid for Greenland a mistake, Denmark's leader laments "being threatened by our closest ally."

European leaders and California Gov. Gavin Newsom have expressed strong concerns at the World Economic Forum over the Greenland crisis and global trade issues.

Tomorrow, CNBC's Joe Kernen will interview President Donald Trump, who will make his first in-person visit to Davos since 2020. The president is set to address the forum on Wednesday amid fresh tariff threats and heightened international tension over his push to acquire Greenland.

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The European Union’s top official has described U.S. President Donald Trump’s planned new tariffs over Greenland as a “mistake” between long-standing allies and called into question Trump’s trustworthiness.

"How do you justify taking over a country when, in fact, Denmark and Greenland have said they are not interested?”