Greenland is a homeland-security issue for all NATO allies

Icebergs in Greenland

The 2026 U.S. National Defense Strategy mentions access to Greenland as essential for the defense of the U.S. homeland. However, insufficient surveillance and response capabilities in and around Greenland put all NATO allies at risk. Drawing on a recent wargame, this op-ed identifies capabilities the US and its allies should invest in to address this risk.

Donald Trump’s aggressive approach toward Greenland understandably caused a stir within the North Atlantic Treaty Organization.