In recent days the president-elect has called for asserting U.S. control over the Panama Canal and Greenland, showing that his “America First” philosophy has an expansionist dimension.

President-elect Donald Trump appears to be entertaining an American territorial expansion that, if he’s serious, would rival the Louisiana Purchase or the deal that netted Alaska from Russia.

WEST PALM BEACH, Fla. — First it was Canada, then the Panama Canal. Now, Donald Trump again wants Greenland. The president-elect is renewing unsuccessful calls he made during his first term for the U.S. to buy Greenland from Denmark, adding to the list of allied countries with which he’s picking fights even before taking office on Jan. 20.