NATO was set up by the U.S. to confront the U.S.S.R. at the height of America's anti-communism hysteria. The eventual 2% commitment of GDP is an entirely made up, arbitrary figure which is meaningless in this day and age. The European countries can try and meet it if they like, they have all the skin in the game. Military buildups (which is what Mr. Trump is advocating) are an incredible waste of resources. Peaceful relations and trade are better steps to security.