The past year has been marked by ebbing and flowing of tensions in Europe and Canada over the U.S.'s commitment to NATO.

Denmark's Prime Minister Mette Frederiksen visited Greenland on Friday in a show of support for the Arctic island that U.S. President Donald Trump wants to annex.

“It’s very disrespectful.”

Veteran diplomat tells CBS News Denmark "ready to cooperate" on Greenland, and he expects U.S. to abandon "anachronistic approach of colonialism" post-Trump.

Leaders of Denmark and Greenland insisted Thursday that the island's sovereignty was nonnegotiable after U.S. President Donald Trump said he had agreed with the NATO chief on the framework of a future Arctic security deal that Trump said would grant the U.

US President Donald Trump has once again questioned whether NATO allies would “be there” if the United States “ever needed them,” claiming that the alliance’s troops “stayed a little back” from the frontlines in Afghanistan.

In a Truth Social post, President Trump suggested putting the world’s strongest military alliance “to the test” by invoking its mutual defense clause.

NATO Secretary-General Mark Rutte met with officials from Denmark and Greenland on Monday to discuss “collective security” as President Trump pushes to acquire the semiautonomous Danish