Denmark Turns NATO's Core Doctrine Against Its Own Ally

At the NATO summit in Ankara on July 8, Danish Prime Minister Mette Frederiksen stated she expected fellow members to defend Greenland—effectively invoking collective defense against the U.S., not an external adversary. The rhetorical move has no postwar precedent. It exposes a structural fault in NATO's founding logic: Article 5 was designed for external aggression, not intra-alliance territorial disputes. Whether other members will honor this expectation remains untested.