BRUSSELS, Jan 20 (Reuters) - The time for flattering Donald Trump is over and Europe should hit back hard economically if the U.S. imposes tariffs on NATO allies that sent troops to Greenland, ex-NATO boss and former Danish Prime Minister Anders Fogh Rasmussen said on Tuesday.
Rasmussen said Trump's insistence that Greenland - a semi-autonomous Danish territory - should become part of the United States represented the biggest challenge to NATO since its establishment in 1949.
