Britain and Germany now want to make Arctic security visibly NATO business

Key Points

1. Europe is weighing a NATO “Arctic Sentry” mission to strengthen deterrence around Greenland.
2. Trump’s demand to “own” the island has turned security talk into a sovereignty clash inside NATO.
3. The outcome will shape how allies handle future strategic-territory disputes.

President Donald Trump reignited the Greenland dispute by saying the United States will “own” the island. He argued that ownership is needed to keep Russia or China from gaining influence.

Trump noted the U.S. already operates a major base there and said he could reinforce it, but insisted Washington needs “title.”

Germany and the UK are trying to blunt that claim by making Arctic security visibly collective. Berlin is discussing a NATO framework often described as “Arctic Sentry,” meant to expand surveillance and readiness while leaving Greenland’s status untouched.

The model is NATO’s “Baltic Sentry,” launched in January 2025 to protect critical infrastructure through tighter monitoring and coordination.

German foreign minister Johann Wadephul is expected to raise Greenland with U.S. Secretary of State Marco Rubio this week.

Greenland tensions test NATO unity

UK Prime Minister Keir Starmer has pressed allies to increase their northern posture and has spoken with leaders including Emmanuel Macron and German chancellor Friedrich Merz.

NATO secretary-general Mark Rutte has confirmed allied talks on new Arctic steps, and Belgium’s defense minister has publicly urged a NATO operation.

Greenland has 56,699 residents, and its economy is narrow; seafood accounts for about 90% of exports. Denmark’s annual block grant has been reported around $614 million (2023).

The U.S.-operated Pituffik Space Base supports missile warning and space surveillance, with a permanent presence often estimated near 150 personnel.

European anxiety sharpened after Reuters reported a U.S. operation on January 3, 2026 captured Venezuela’s President Nicolás Maduro.

Denmark and Greenland plan a Washington visit to contest what they call factual errors and exaggerated security claims, while Rubio has said the aim is purchase, not military seizure.

EU defense commissioner Andrius Kubilius warned a forced takeover could effectively end NATO and could engage the EU’s mutual-defense clause (Article 42.7).

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