A diplomatic breakthrough between the U.S. and Denmark appears to have eased long-standing tensions over Greenland’s security status, marking a potential shift in NATO relations. While President Trump’s announcement framed the agreement as a major achievement, neither the terms nor the broader implications have been disclosed, leaving room for speculation among allies and opponents alike. Officials have emphasized key aspects of the deal, though specifics remain under wraps, raising questions about its scope and impact. The move could signal a thaw in a contentious issue that has strained transatlantic cooperation for years.


President Trump’s announcement that he secured a deal with Denmark and Greenland over security for the Arctic territory gave both the president’s supporters and critics something to cheer over — the removal of a key irritant in the NATO relationship.  The exact details of the deal are not yet public, but officials have highlighted that...