Global warming is making both places more important to global shipping and trade. To imagine the kind of future a hotter, dryer climate may bring, and the geopolitical challenges it will create, look no farther than two parts of the world that Donald Trump wants America to control: Greenland and the Panama Canal.

For dozens of US tourists watching a cargo ship pass through the Panama Canal, Donald Trump's threat to possibly wrest back control of the waterway is nonsensical.None of those interviewed backed US President-elect Trump in his repeated threats that he could seize control of the canal after he returns to the White House next month.

PHOENIX -- PHOENIX (AP) — Donald Trump suggested Sunday that his new administration could try to regain control of the Panama Canal that the United States “foolishly” ceded to its Central American ally, contending that shippers are charged “ridiculous” fees to pass through the vital transportation channel linking the Atlantic and Pacific Oceans.

President-elect Trump is sparking a new feud with Panama over an old topic: the vital maritime canal connecting the Atlantic and Pacific Oceans. What Trump is proposing would be a massive

Handing control of the Panama Canal from the U.S. over to the Central American country was one of President Jimmy Carter's most controversial, and most overshadowed, foreign policy achievements.

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.

Panama is celebrating the 25th anniversary of the U.S. handover of the Panama Canal, which president-elect Donald Trump has threatened to take back

Panama on Tuesday marked the 25th anniversary of the United States' handover of its interoceanic canal, a milestone overshadowed by President-elect Donald Trump's threat to demand control be returned to Washington.