Relations between Greenland and the United States sank further on Sunday as the Greenlandic prime minister erupted over what he called a “highly aggressive” delegation of senior officials the Trump administration said it would send to the island this week.

Usha Vance, the second lady, and Michael Waltz, the national security adviser, are among the officials headed to the island, which is a semiautonomous territory of Denmark, though President Trump has vowed to make it part of the United States “one way or the other.”

Ms. Vance is scheduled to make a series of cultural stops after her arrival on Thursday, separate from Mr. Waltz. The national security adviser is supposed to be traveling earlier in the week with the U.S. energy secretary, Chris Wright.

The prime minister, Mute B. Egede, said on Sunday that Greenlanders’ effort to be diplomatic just “bounces off Donald Trump and his administration in their mission to own and control Greenland.”

He made the remarks, his angriest yet, to a Greenlandic newspaper on Sunday, and a high-ranking member of his party confirmed them. The prime minister seemed especially upset with Mr. Waltz’s involvement.

“What is the national security adviser doing in Greenland?” he asked. “The only purpose is to demonstrate power over us.”

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