President Donald Trump announced Wednesday that preparations are underway for a massive expansion of oil, natural gas and mineral exploration in Greenland, pointing to what he described as extraordinary untapped energy reserves beneath the Arctic island as the United States moves to strengthen both its economic and military presence in the region.

The announcement comes approximately one month after Washington, Denmark and Greenland reached a landmark agreement expanding American military operations on the island while preserving Danish sovereignty and Greenland’s right to determine its own political future.

Writing on Truth Social, Trump said that “massive” exploration activities were being prepared and suggested that Greenland could possess some of the world’s most accessible petroleum reserves.

The president offered no specific timetable for the proposed exploration, nor did he identify the companies expected to participate, the locations under consideration or the financial arrangements being developed.

However, he pointed to assessments suggesting that Greenland’s energy potential could be substantially greater than previously recognized.

Trump said “there are experts that are saying that ⁠the amount of easily available oil is ​far greater than that of almost any land, ⁠anywhere in the world.”

The remarks represent another significant development in Trump’s longstanding interest in Greenland, which has emerged as a major focus of his administration’s Arctic strategy because of its geographic location, natural resources and growing importance to American national security.

The island occupies a strategically important position between North America and Europe, making it a critical location for monitoring military activity across the North Atlantic and detecting potential threats approaching the United States from the Arctic.

Trump underscored that importance in his Wednesday statement, linking the expanded American presence in Greenland to his administration’s plans for a more advanced national missile defense system.

“Any future ‌attack on the United States will have to come across Greenland, where our Defense ⁠will routinely knock ‌down drones, missiles, ⁠or any other form of weapon not yet ⁠even conceived,” Trump wrote.

The president’s comments follow the September agreement between the United States, Denmark and Greenland, which was intended to resolve months of diplomatic tensions generated by Trump’s repeated demands for greater American control over the territory.

Under the arrangement, Washington is expected to expand its military footprint in Greenland, including the establishment of two additional American military bases and infrastructure connected to the proposed Golden Dome missile defense system.

At the same time, the agreement reaffirms that Greenland remains under Danish sovereignty and recognizes the right of Greenlanders to determine their own political future.

The agreement builds on decades of American military activity in Greenland, where the United States already operates Pituffik Space Base, formerly known as Thule Air Base.

The installation, located in northwestern Greenland, supports missile warning, missile defense and space surveillance operations. Approximately 200 American military personnel are currently stationed there, a much smaller presence than the thousands of U.S. troops deployed across numerous installations during the Cold War.

Under the new security arrangement, the United States is preparing to expand its presence beyond Pituffik, with plans for additional facilities at Narsarsuaq in southern Greenland and Mestersvig in the east.

The September agreement also includes restrictions designed to prevent countries outside NATO and other approved partnerships from gaining sensitive military or strategic economic footholds on the island. Those provisions are particularly relevant as Washington seeks to counter growing Chinese and Russian influence in the Arctic.

Greenland’s mineral wealth is another major factor behind American interest. The island contains deposits of rare earth elements and other critical minerals used in military equipment, electronics, batteries and advanced manufacturing.

American policymakers have increasingly sought alternative sources of those materials as the United States attempts to reduce its dependence on China, which dominates important portions of the global rare earth supply chain.

However, the president’s announcement leaves several major questions unresolved.

Greenland’s government halted the issuance of new oil and gas exploration licenses in 2021, citing environmental concerns and the economic risks associated with petroleum development. The September security agreement did not grant the United States new rights to explore or extract Greenland’s natural resources.

Commercial development also presents considerable practical difficulties. Much of Greenland is covered by an enormous ice sheet, while its remote geography, severe weather, limited transportation infrastructure and high operating costs have complicated previous efforts to develop oil fields and mineral deposits.

The U.S. Geological Survey has identified potentially substantial offshore oil and natural gas resources, but those estimates do not establish how much petroleum could be extracted profitably.

One American company has been exploring the possibility of drilling in Greenland under previously issued permits, with activity potentially beginning in 2027. That project, however, is considerably smaller than the large-scale exploration effort described by Trump.

Greenland’s deputy mining minister, Jørgen Hammeken-Holm, indicated Wednesday that although resource development initiatives are being pursued, the territory remains far from the kind of extensive exploration and production envisioned by the president.

Trump’s announcement nevertheless generated immediate interest among investors, with shares of several companies connected to Greenland’s energy and mining industries rising sharply following his statement.

The administration has presented its Greenland strategy as part of a broader effort to strengthen American energy independence, secure critical minerals and establish a more formidable military position in the Arctic.

Whether Wednesday’s announcement leads to new drilling permits, major investments or actual resource production will depend on further negotiations with Greenlandic authorities, commercial feasibility studies and the willingness of private companies to commit substantial capital to projects in one of the world’s most challenging operating environments.