Greenland's prime minister, Múte Egede, called Waltz's visit a "provocation" in an interview with Greenlandic daily _Sermitsiaq_ on Sunday.
"The only purpose is to show a demonstration of power to us, and the signal is not to be misunderstood," he said.
"He is Trump's confidential and closest adviser, and his presence in Greenland alone will certainly make the Americans believe in Trump's mission, and the pressure will increase after the visit," he said of Waltz's upcoming visit.