MILAN - Several European leaders have cautioned Donald Trump against violating the sovereignty of other NATO allies across the continent, following comments by the U.S. president-elect that did not rule out using military force to annex Greenland's territory.

French Foreign Minister Jean-Noël Barrot says the European Union (EU) will stand firm in its alliance in the face of repeated comments from President-elect Trump about the U.S. acquiring Greenland

The European Union will not let other nations attack its sovereign borders, France's foreign minister said on Wednesday, responding to comments by U.S. President-elect Donald Trump on taking over Greenland.