Buttigieg called on Trump to fire Mike Waltz after Pete Hegseth shared war plans to a Signal chat which included Atlantic's editor-in-chief Jeffrey Goldberg.
The prime minister said a visit by Usha Vance and administration officials is a power move to send a message regarding Trump's desire to acquire the island.
The second lady is set to depart for Greenland with a U.S. delegation, including national security adviser Mike Waltz and Energy Secretary Chris Wright.
The U.S. withdrew from an international body designed to document and preserve evidence for any future prosecutions for the crime of aggression against Russian leaders.
Israeli Prime Minister Benjamin Netanyahu gifts John Fetterman a silver-plated pager, a nod to a covert operation that caused thousands of pagers to explode.
Tammy Bruce, the State Department's top spokeswoman, indicated to reporters that the program was not aligned with the administration's foreign policy plans.