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Trump Greenland Threat 2026: A Looming Crisis for the NATO Alliance

2 min readSource

The Trump administration's 2026 threat to seize Greenland tests the limits of NATO's Article 5. Explore the historical context of internal alliance disputes.

Can a military alliance survive when its leader threatens its members? The Trump administration has once again ignited a geopolitical firestorm. According to Al Jazeera, Washington is threatening to seize Greenland—either by purchase or force—to "deter adversaries" in the Arctic on January 10, 2026. This move puts the NATO alliance in an unprecedented deadlock.

The Trump Greenland Threat 2026 and the Limits of Article 5

Greenland is a semi-autonomous territory of Denmark, and both nations are founding members of the alliance. While Greenland already hosts the Pituffik Space Base, the U.S. push for total control has sparked outrage. European and Canadian leaders have reportedly begun drafting contingency plans to support Denmark. Analysts warn that if the U.S. follows through, it would challenge the very survival of Article 5, which mandates collective defense. Since the article requires unanimous agreement, a conflict between two members would leave the alliance paralyzed, unable to vote against itself.

Historical Rifts: When NATO Members Clashed

The Cod Wars: A series of naval confrontations between the UK and Iceland over fishing rights. NATO pressured the UK to concede to keep the Keflavik airbase open.
Invasion of Cyprus: Turkiye launched a military intervention following a Greek-sponsored coup, nearly causing a full-scale war between the two allies.
Libya Intervention: Divisions between Germany, Poland, and France delayed NATO's formal command for nearly two weeks.

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