However, a new target is likely to be agreed at a NATO summit in The Hague in June, spurred by fears that Russia may attack a NATO country after Ukraine and by Trump’s exhortations, officials said. The key open questions are what that new target will be and whether it will be enough to satisfy Trump.

Britain’s top diplomat says Europe’s security “is on a knife-edge” and President-elect Donald Trump is right to say NATO member nations must increase military spending

NATO's current target for members' defense spending is 2 percent of their country's GDP. Trump has repeatedly called on the alliance to increase this amount.