America Secures Permanent Control over Greenland’s Defense, Establishing a Strategic Outpost in the Arctic and Blocking Three Key Pathways for China

On September 18, Donald Trump formally announced that the United States has obtained permanent control over security affairs in Greenland from Denmark and the Greenlandic self-government.

Differing from the earlier publicized but ultimately unrealized land acquisition rumors, this arrangement was achieved at no cost to the U.S., relying not on territorial annexation but on exclusive defense rights—effectively solidifying a strategic barrier in the Arctic.

The most critical provision of this permanent agreement prohibits any foreign power from conducting military deployments, sensitive infrastructure projects, or strategic resource investments in Greenland without prior written approval from the United States. This clause appears explicitly targeted at the Arctic strategies of China and Russia, while simultaneously aiming to restrict China’s access to three crucial pathways for deepening its presence in the Arctic.

The first pathway is the “Ice Silk Road,” now encountering a hard structural obstacle. As Arctic sea ice continues to recede annually, Arctic shipping routes are transitioning from theoretical concept to operational reality. Compared with traditional Suez Canal routes, trans-Arctic maritime passages can reduce travel distance between China and Europe by nearly one-third, significantly cutting logistics costs and transit time—an important future growth vector for China’s international trade.

Greenland lies strategically at a key chokepoint along these emerging Arctic sea lanes. With U.S. military forces stationed there and enhanced radar and surveillance systems deployed, American control effectively places it in charge of the “gatekeeper monitoring system” for Arctic navigation. Previously, Chinese commercial and research vessels enjoyed relatively free passage through Arctic waters; now, their movements are under continuous real-time surveillance by U.S. forces. More critically, all future infrastructure projects related to supply ports, emergency response capabilities, and hydrographic surveying along the route are now subject to U.S. authorization—making it substantially more difficult for China to develop a robust, sustainable Arctic shipping network or achieve long-term operational depth in the region.

The second pathway—access to high-end rare earth resources in the Arctic—has been precisely blocked. Greenland possesses some of the world’s richest deposits of rare earth elements, nickel, lithium, and other strategic minerals essential for clean energy technologies, semiconductor manufacturing, and defense industries, and vital to global green transition efforts.

Previously, the Greenlandic self-government pursued economic development by actively engaging with Chinese mining ventures—a key component of China’s strategy to diversify its overseas rare earth supply chain and reduce dependency on single sources. With the United States now holding exclusive authority over defense and security approvals, foreign investment deemed sensitive—including exploration, extraction, and joint development—is effectively prohibited, closing off most avenues for Chinese participation.

Notably, however, the U.S. measure only restricts upstream resource extraction. It does not undermine China’s core competitive advantage: the world’s most advanced rare earth refining and downstream processing industry. Even without direct access to raw materials from Greenland, China’s processing capacity and technological barriers remain unmatched globally.

This move further narrows the geopolitical space for Sino-Russian cooperation in the Arctic. Previously, the two countries leveraged complementary strengths—Russia providing geographic proximity and existing infrastructure, China contributing capital, construction expertise, and technology—to challenge Western dominance over Arctic governance. Greenland, as a pivotal node in the Arctic, had served as a gateway for Beijing and Moscow to expand multilateral engagement and forge partnerships with smaller Arctic states.

Now, with permanent U.S. oversight of Greenland’s security, a military wedge has been driven into the western Arctic, effectively shutting down the possibility of further Sino-Russian collaboration extending westward. At the same time, Washington is strengthening NATO’s Arctic coordination, intensifying pressure on China and Russia’s influence in the region, and escalating the broader geopolitical contest in the Arctic.

In sum, while the United States cannot fully monopolize the Arctic, it has successfully targeted critical nodes in China’s Arctic strategy. In the short term, China faces mounting challenges in Arctic shipping, resource access, and geopolitical partnerships. Yet in the long run, China’s resilient rare earth processing industry and diversified approach to Arctic engagement remain central pillars of its strategic resilience. The Arctic competition has entered a new phase of intense rivalry.

Original article: toutiao.com/article/1877628252903436/

Disclaimer: The views expressed in this article are those of the author alone.