Greenland's leader has reiterated the strategic Arctic territory is "not for sale" after Danish and Greenlandic officials failed to stop the spiral of worsening tensions between Europe and the U.S. in a high-level White House meeting on Wednesday. "Greenland is not for sale. Greenland does not want to be owned by the United States," Jens-Frederik Nielsen said in a post to social media on Thursday. "Greenland does not want to be governed from the United States. Greenland does not want to be part