Republican Senator Lisa Murkowski of Alaska publicly split with President Donald Trump on Tuesday over his stated interest in annexing Greenland, arguing the United States should treat the territory as a partner—not a prize.
Why It Matters
Trump’s renewed push to bring Greenland under U.S. control has intensified debate in Washington and abroad. The administration has framed the idea as a national security issue, but it has prompted criticism from Republican lawmakers and firm opposition from European allies.
The suggestion—raised by the White House—that military force could be used to secure the self-governing Danish territory is also fueling questions about NATO cohesion and the durability of U.S. relationships in Europe. At the same time, it puts America’s Arctic strategy under a brighter spotlight as competition in the region grows.
What To Know
On Tuesday, the Trump administration confirmed it is discussing potential pathways to bring Greenland under U.S. control, adding that “utilizing the U.S. military is always an option at the commander-in-chief’s disposal,” according to White House press secretary Karoline Leavitt, per The Guardian.
Trump has repeatedly described acquiring Greenland—an autonomous territory within the Kingdom of Denmark—as strategically important for deterring rivals and safeguarding U.S. interests in the Arctic.
In a post on X Tuesday, Murkowski said she hopes the administration’s language is “nothing more than posturing for a new era of cooperation,” warning that any attempt to claim or seize the territory by force would weaken U.S. security and damage international relationships.
She pointed to longstanding U.S.-Greenland cooperation dating back to World War II and continuing through the Pituffik Space Base, emphasizing that shared goals have historically been achieved through diplomacy and engagement with Greenland’s people. As Greenland determines its future, she said, the U.S. should treat it “as an ally, not an asset,” and prioritize partnership over possession.
Senator Thom Tillis of North Carolina issued a joint statement Tuesday with Senator Jeanne Shaheen of New Hampshire, saying that when Denmark and Greenland make clear that Greenland is not for sale, the United States must respect the Kingdom of Denmark’s sovereignty and territorial integrity. They warned that any hint of coercion toward a NATO ally would undercut the alliance’s core principle of self-determination.
Shaheen and Tillis, who co-chair the bipartisan Senate NATO Observer Group, added that with war ongoing in Ukraine and rising threats from Russia and China in the Arctic and Indo-Pacific, NATO cannot afford internal divisions. They argued that transatlantic strength comes from unity and mutual respect, and urged the U.S. to work with allies—not against them—to advance shared security.
What People Are Saying
Senator Ruben Gallego of Arizona wrote on X Tuesday that the situation is “not more complicated” than Trump wanting the island and suggested he could risk U.S. troops for personal political impact, adding: “The US military is not a toy.”
Stephen Miller, deputy chief of staff for policy and a Homeland Security adviser to Trump, told CNN on Monday that because the U.S. is NATO’s leading power, Greenland should be part of the United States to help secure the Arctic region and protect NATO interests.
What Happens Next
The administration is expected to face sustained diplomatic resistance from European partners. The dispute could carry longer-term consequences for NATO unity, U.S. credibility abroad, and how Washington positions itself in the rapidly evolving Arctic security environment.
