New York Times
July 11, 2018
Donald Trump prepared for this week’s NATO summit by doing what no president had done before — making a case that the alliance is a bad deal for the American people. Last week in Great Falls, Mont., he said that he had told Chancellor Angela Merkel of Germany, “I don’t know how much protection we get by protecting you.” Mr. Trump has been even tougher on the European Union, branding it “as bad as Nafta” and adding, “Sometimes our worst enemies are our so-called friends.”
Burns, Nicholas. "What America Gets Out of NATO." New York Times, July 11, 2018.