President Trump reportedly held a “fiery” call with Denmark’s Prime Minister Mette Frederiksen over the president’s insistence that U.S. control of Greenland is necessary for American national security.

A call between President Donald Trump and Denmark Prime Minister Mette Frederiksen about Greenland recently spiraled out of control, according to several officials briefed on the call. The Financial Times first reported Friday on the 45-minute call between Trump and Frederiksen,

Denmark’s Prime Minister Mette Frederiksen has called the country’s business leaders to a meeting on Thursday after US President-elect Donald Trump last week threatened military or economic action such as tariffs to take control of Greenland.