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

Grynkewich said NATO’s military headquarters has “a ton of expertise” that could be used to organize an Arctic mission.

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.

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

Shaheen said the Trump administration's reported interest in taking over Greenland has prompted strong reactions abroad.

Trump tells Norway's Jonas Gahr Støre denied Nobel frees U.S.-first focus, demands NATO hand over Greenland amid Russia threats and tariff plans on 8 allies. Denmark rejects blackmail; Europe eyes retaliation.

A bipartisan congressional delegation met with Danish and Greenlandic officials Friday to show support for Greenland's territorial integrity despite President Trump's push to acquire the island.