Greenland framework's lessons for the ROK-US alliance

U.S. President Donald Trump’s recent decision in Davos to withdraw proposed high tariffs on European goods was widely interpreted as a welcome easing of trade tensions. On its own, that reading would be reasonable. But viewed alongside the simultaneously unveiled “Framework for the Future of Greenland,” the move points to something far more significant: a fundamental shift in how the United States now defines and manages its alliances.

At the core of the Greenland framework are open-ended commitments and the deployment of a U.S.-led missile defense system. While Denmark formally retains legal ownership of the territory, effective control over strategically important rare earth resources and key security prerogatives rests largely with Washington. This separation between legal form and strategic substance reflects a new model of alliance management — one focused less on symbolism and more on redistributing security burdens and control.

It would be a mistake to interpret this shift as merely a reflection of Trump’s personality. The so-called “Trump phenomenon” is better understood as a result, not a cause. Within the United States, the traditional logic of security provision justified by global leadership has lost much of its domestic appeal. Growing political pressure to reassess the costs and benefits of alliances has prompted the U.S. to adopt a more explicitly transactional approach. In this context, Trump’s strategy is not impulsive but calculated.

Europe, moreover, is not a passive victim of this recalibration. For decades, major European states relied heavily on U.S. security guarantees while deepening economic ties with America’s strategic competitors. Germany pressed ahead with Nord Stream 2 despite repeated U.S. warnings, increasing its dependence on Russian energy and its geopolitical vulnerability. France and other Western European countries, drawn by access to the Chinese market, often hesitated to take firm positions on technology security and human rights when commercial interests were at stake.

From Washington’s perspective, this created an imbalance that could no longer be sustained: American taxpayers underwriting European security while European economies contributed to the strength of rival powers. The resulting frustration paved the way for Trump-style transactional diplomacy, with the Greenland framework serving as a concrete example of that logic in action.

The broader strategic direction of the United States is now becoming clearer. As long-term competition with China defines American grand strategy, alliances are being redefined less as value-based communities and more as instruments of national power. Contributions must be tangible. Burdens must be shared in measurable ways. Rhetorical alignment alone is no longer sufficient.

For Korea, this evolution carries serious implications. If Denmark — a core NATO member with no active battlefield on its territory — has accepted a significant transfer of practical control in the name of alliance realignment, it would be unrealistic to assume that Korea will be treated as an exception. A country living under the reality of an armistice, not peace, will inevitably face even more searching demands.

Future U.S. expectations toward Korea are likely to extend well beyond traditional defense cost-sharing. Strategic industries such as semiconductors, batteries, shipbuilding and advanced technologies will increasingly be viewed as components of alliance contributions. In this environment, assurances that the U.S.–ROK alliance is “strong” or “ironclad” are no longer sufficient by themselves.

What is required instead is strategic clarity. Korea must soberly reassess what it can offer, what it must protect, and where its red lines lie. Alliances today are sustained not by sentiment, but by relevance. The critical question is not whether the United States will ask more of its allies, but whether Korea will be prepared when it does.

The choice is not between loyalty and autonomy. It is between preparation and surprise.

Retired Lt. Gen. Chun In-bum is the former commander of the Republic of Korea Army Special Warfare Command.