President Donald Trump's tariff threats against European countries opposed to him to acquiring Greenland present America's longtime allies with a big problem of how to respond.

The European Union’s top official says President Donald Trump’s threats of new tariffs over Greenland are “a mistake especially between long-standing allies,” and she’s calling into question Trump’s t...

“This is appalling. Greenland is a NATO ally. Denmark is one of our best friends… so the way we’re treating them is really demeaning and it has no upside,” Rep. Don Bacon of Nebraska said in early Jan...