"As the second year of the Trump Administration begins, a degree of uncertainty lingers over transatlantic relations. The U.S.-European partnership could face challenges in 2018. Following the election of President Trump, numerous European officials and analysts expressed concern about the future trajectory of U.S.-European relations, particularly the U.S. commitment to NATO, the European Union (EU), and the multilateral trading system. Although the Trump Administration has not altered or withdrawn from the fundamental aspects of the transatlantic relationship, many European leaders appear uneasy with key parts of the Trump Administration's 'America First' foreign policy and some question whether the United States will remain a reliable partner in 2018."
CRS Insight, IN10847
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html