Officials summoned the American ambassador to express its displeasure after the Trump Administration was said be ratcheting up surveillance.

Denmark on Thursday summoned the top U.S. diplomat in the country for an explanation following a Wall Street Journal report about the United States stepping up intelligence gathering on Greenland, a semi-autonomous Danish territory coveted by U.

The classified “collection emphasis” instructions, first reported by the Wall Street Journal, ordered agency chiefs to use spies and electronic tools to identify Greenlandic and Danish supporters of Trump’s goals, and to learn more about Greenland’s secession movement and attitudes toward US resource extraction.