Operation Deep Ice

U.S. Efforts to Probe Greenland’s Military Defenses

Background and Geopolitical Context

Greenland, an autonomous territory within the Kingdom of Denmark, has long been of strategic interest to the United States due to its Arctic location, which is vital for monitoring threats from Russia and China. The U.S. maintains Thule Air Base in Greenland under a 1951 defense agreement, granting permanent military access while respecting Danish sovereignty. However, tensions escalated in recent years, particularly under President Donald Trump, who has repeatedly expressed interest in acquiring Greenland for national security reasons. Trump has described Greenland as essential to U.S. defense and has not ruled out using force, stating that “utilizing the U.S. military is always an option.” This rhetoric has prompted Denmark to warn that any U.S. takeover would mark “the end of NATO,” as it would invoke Article 5, obligating allies to defend Denmark against the U.S.

In response, Denmark has increased its military presence on the island, including aircraft, ships, soldiers, and investments in Arctic capabilities like F-35 fighters, frigates, and drones. European NATO allies, including France, Germany, the UK, Norway, and Sweden, have deployed troops to Greenland as a demonstration of solidarity and deterrence against potential U.S. actions. Greenland’s Prime Minister, Jens-Frederik Nielsen, has stated that if forced to choose, Greenlanders would side with Denmark over the U.S. Denmark’s Arctic Command emphasizes its focus on Russian threats rather than the U.S., despite the ongoing dispute.

Denmark has also proposed a NATO mission for Greenland’s defense, amid discussions in a joint working group. Critics, including U.S. officials like Stephen Miller, have questioned Denmark’s sovereignty over Greenland and argued that it “should be part of the United States,” claiming no one would militarily challenge the U.S. over it.

The Leaked Documents and U.S. Intelligence Gathering

According to a report by the Danish newspaper Berlingske, citing leaked and heavily censored documents from Denmark’s Ministry of Defence, the United States in 2025 informally sought confidential information on Greenland’s military installations, ports, air bases, and critical infrastructure without officially involving Copenhagen. This bypassed standard channels through Denmark’s Foreign Ministry, Defense Ministry, and military leadership. U.S. military personnel, likely stationed in Greenland, approached Danish colleagues directly to collect this data, which is considered strategically sensitive.

The Danish Ministry of Defence and top military officials, including the defense chief, were immediately alerted due to concerns that this information could aid U.S. planning for a potential intervention or invasion. An expert cited in the report noted that U.S. espionage against allies like Denmark is not unexpected in such high-stakes geopolitical scenarios.

This revelation has fueled discussions on X (formerly Twitter), with users highlighting the irony of U.S. actions against a NATO ally. Posts describe the U.S. efforts as “snooping” or “secretly trying to obtain information,” raising alarms about alliance trust.

Danish Defensive Posture and Legal Framework

Denmark’s military has confirmed standing orders under a 1952 royal decree, authorizing soldiers in Greenland to open fire immediately on any invading forces, including the U.S., without awaiting further commands. This law, originally from the Cold War era, applies regardless of the aggressor’s identity. Danish officials acknowledge their limited capacity to match U.S. power but emphasize resistance through NATO frameworks.

France has proposed a European initiative to bolster Greenland’s security, including deploying troops, though Denmark initially resisted but may reconsider amid U.S. pressure. Trump has mocked Denmark’s efforts, claiming they’ve only added “one more dogsled” to Greenland’s defense, despite significant investments.

U.S. Perspective and Criticisms

U.S. officials argue that Denmark has neglected Greenland’s security, prompting the need for American control. However, experts counter that the U.S. itself reduced its Greenland presence post-Cold War, closing bases like Sondrestrom, and that claims of Chinese warships near Greenland are exaggerated. Security analysts from Sweden and Norway dismiss U.S. portrayals of Arctic threats as overstated, warning against panic-driven military buildup.

Denmark notes that the existing defense agreement already provides the U.S. with full access, but the U.S. has underutilized it, reducing presence by 99%. Leaks about U.S. plans, including classified briefings on acquisition, have been attributed to congressional sources, highlighting internal U.S. debates.

Potential Implications

If escalated, this could lead to a direct NATO conflict, with European forces prepositioned as deterrence. Legal experts suggest any U.S. invasion order would be illegal, potentially subjecting Trump to a military tribunal. Public sentiment on X reflects shock at intra-alliance tensions, with some viewing it as a “win” for U.S. isolationism if NATO dissolves. As of January 19, 2026, diplomatic talks continue, but no resolution has been announced.