Donald Trump says the U.S. needs control of Greenland and the Panama Canal "for national security." Here's why both places ...

The President-elect wouldn't rule out military or economic coercion Tuesday, saying the US needs to stop China. But climate ...

Trump has referred to Canada as the '51st State,' demanded that Denmark consider ceding Greenland, and called for Panama to ...

Donald Trump's talk about U.S. territorial expansion has infuriated foreign allies, according to national security experts.

Greenland plays an outsized role in the daily weather experienced by billions of people and in the climate changes taking shape all over the planet.