At a key summit, President Trump airs grievances against NATO allies, makes clear he’s still eyeing Greenland and weighs the U.S. military presence in Europe. Compass Points moderator Nick Schifrin discusses the challenges of navigating an unpredictable American president with Latvian Foreign Minister Baiba Braže, Belgian Defense Minister Theo Francken and Kaja Kallas, the EU’s top diplomat.

Trump dashed hopes of an two-day summit by telling reporters the US should "control" Greenland. The Danish prime minister hit back, calling on the US to "respect Danish…

If European leaders had a bingo card of all the fights Donald Trump could pick with them, at this week’s Nato summit in Ankara they would have won a blackout. Starting as he meant…