It was a contentious, aggressive telephone call, five days before the inauguration of President Donald Trump on Jan. 20.

How earnest is Donald Trump? Does the president dream of stealing new territory for America? How maniacally imperialist will ...

Trump's territorial ambitions and disregard for international norms are "serious, and potentially very dangerous," a senior ...

The president has repeatedly discussed his desire to "retake" the Panama Canal and take possession of Greenland.

US President Donald Trump expressed confidence that the United States will gain control over Greenland. He stated that 57,000 ...