Such discussions will be new for Rubio, although it is not the first time the Trump administration has broached the subject. President Donald Trump’s brief statement to reporters on Jan. 4 aboard Air Force One was succinct: “We need Greenland from the standpoint of national security.” It was a reiteration of his March 2025 congressional address.
Additionally, Trump first mentioned purchasing Greenland in August 2019, a suggestion rebuffed by Danish officials, which led to a brief kerfuffle between the two states.
Seeking the ‘Small Gibraltar’
While negotiating the Alaska purchase from Russia, Seward was negotiating the purchase of the Danish West Indies from Denmark. The small islands of St. Thomas, St. John, and St. Croix—specifically the “small Gibraltar,” St. Thomas—were considered vital to national security. The Civil War had highlighted U.S. vulnerabilities in the Caribbean, as the major European powers held possessions in the region, but the United States did not. And it was the European powers that concerned the United States.A Second Attempt
Early into the momentous year of 1898, Sen. Henry Cabot Lodge expressed his concerns about the islands in a report to the Foreign Relations Committee, stating: “So long as these islands are in the market there is always the danger that some European power may purchase, or try to purchase, them. This would be an infraction of the Monroe Doctrine, and would at once involve the United States in a very serious difficulty with the European power which sought possession of the islands. In the interest of peace, it is of great importance that these islands should pass into the hands of the United States and cease to be a possible source of foreign complications, which might easily lead to war. From a military point of view the value of these islands to the United States can hardly be overestimated.”Three weeks later, the Spanish–American War began, during which the United States secured its Pacific seaboard by obtaining Guam and the Philippines from Spain (the United States also annexed Hawaii during this period). Additionally, the United States obtained Puerto Rico and kicked the Spanish out of Cuba, which became a quasi-protectorate.
Spain had fallen far as a European power, but Russia, France, Great Britain, and a surging Germany remained great powers. The ongoing construction of the Panama Canal by the French only increased concerns about the United States’ Atlantic vulnerabilities.
Securing the Islands
In 1910, Maurice Egan, the U.S. ambassador to Denmark, believed he had come up with a plan to obtain both the Danish West Indies and Greenland. Egan wrote to the State Department with the “very audacious suggestion” of a multi-country land trade agreement. Perceiving that the Danish government gave “very little attention” to Greenland—combined with what he viewed as the growing threat of a triple alliance in the Far East of Russia, Japan, and China—he believed that Germany could be utilized as a way of obtaining the islands and placing an ally in the Philippines.He proposed swapping Mindanao, the second-largest Philippine island, for Greenland (and after further talks, the West Indies). This would allow Denmark to swap Mindanao for the Schleswig-Holstein territory it had lost to the Germans in 1864.
“I assure you that it represents the desires and the opinion of some of the best minds in Denmark, and some of them most highly placed,” Egan said.
The proposal, although interesting and complex, came to nothing. Egan, however, may have been onto something.
A year into World War I, it was Germany that caused the Americans to inquire again about the West Indies. Instead of a potential ally as suggested by Egan, Germany was now a threat.
“This plain spoken threat of what might occur under certain conditions had the desired effect,” Lansing recalled.
The Post-World War II Attempt
The acquisition of Greenland arose almost immediately after World War II. In 1946, the State Department took a page out of Egan’s book by suggesting a land trade. The United States would acquire portions of Greenland in exchange for land in Alaska’s Point Barrow district. Again, the land-swap idea was a no-go.Brief and unofficial discussions took place, but the matter was eventually dropped. Denmark and the United States, however, did sign a treaty in 1951 to establish a base in Thule, now known as Pituffik Space Force Base.
Trump and Greenland
Trump, in the spirit of Lansing, has made it rather clear he is not concerned about Danish or Greenlandic interests. His concerns are more immediate and widespread.“We need Greenland from a standpoint of national security, and Denmark is not going to be able to do it,” Trump stated. “The European Union needs us to have it, and they know that.”
The national security threat is no longer from European powers as it was in the 19th and first half of the 20th century. The threats now come from Russia and China, whose navies roam the Arctic Ocean with seeming impunity. Trump claimed, perhaps with a hint of sarcasm, that Denmark was not doing enough to protect American or international interests with Greenland.
“You know what Denmark did recently to boost up security on Greenland?” he rhetorically asked reporters. “They added one more dog sled.”
The world was alarmed when Trump suggested military force was an option. No doubt, as the administration has made clear, purchasing Greenland is preferable. But when Rubio sits down with Danish officials this week, he may need to pull a page out of Lansing’s book. It may again have “the desired effect.” Additionally, much like our purchase of the Danish West Indies, maybe the third attempt is the charm.







