President Donald Trump used a NATO summit in Ankara to put Greenland back at the center of U.S. foreign policy. After several quiet months, Trump revived a dispute with Denmark, recasting the Arctic island as a security necessity.

What Happened?

Speaking alongside NATO Secretary General Mark Rutte, Trump accused allies of failing Washington on Arctic security and said the U.S. had made a historic mistake by returning control of Greenland to Denmark after World War II.

“We took Greenland and then, stupidly, we gave it back,” Trump said. “We shouldn’t have given it back to them, because we’re the ones that need it. We need it for protection of the world, not just the United States.”

Danish Prime Minister Mette Frederiksen rejected the comments, saying Denmark’s position was unchanged. “Greenland is, of course, not for sale,” she said according to PBS News, adding that Copenhagen was ready to defend “every inch” of NATO territory and expected allies to respect Greenlanders’ right to self-determination.

Why it Matters?

Trump criticized NATO, tying Greenland to broader complaints that European allies and Canada have received a “free ride” under the U.S. security umbrella, while demanding they equalize defense spending with Washington.

The island is a strategic chokepoint. Pituffik Space Base, America’s northernmost military installation, supports missile defense, space surveillance and satellite communications. Greenland also anchors the GIUK Gap — the Greenland-Iceland-U.K. corridor that governs Russian naval access to the Atlantic.

However, Greenland’s importance is not just its geography. The island holds reserves of as many as 17 critical metals, including tungsten and heavy rare earths used in advanced weapons systems, electric motors and high-temperature magnets. Its mineral mix has become increasingly valuable as Washington looks to reduce dependence on Chinese-controlled supply chains.

The Kvanefjeld deposit contains about 1 billion tons of ore at a 1.1% rare-earth concentration, making it one of the world’s largest known sources of materials including neodymium and praseodymium, key inputs for permanent magnets. The nearby Tanbreez project holds an estimated 5 million tons of rare-earth oxides.

Shenghe Resources. remains the largest shareholder in Kvanefjeld, despite Greenland’s uranium mining ban freezing the project. Meanwhile, Critical Metals Corp. (NASDAQ:CRML) completed an acquisition of Tanbreez, after U.S. lobbying helped prevent a sale to Chinese buyers.

Australia’s Energy Transition Minerals offers exposure to Greenland’s undeveloped deposits, while Greenland Mines Ltd. (NASDAQ:GRML) and NioCorp Developments Ltd. (NASDAQ:NB) target precious, battery, and critical minerals tied to Western supply chain security.

Earlier this year, the Center for Strategic and International Studies published a report outlining the island’s potential for the West and its supply chains. However, the organization advised it should happen through coordinated investments and long-term commitments to infrastructure, community engagement and diplomatic coordination.

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