Spotlight: Munich Security Conference opens amid uncertain transatlantic ties, world challenges

NATO Secretary-General Jens Stoltenberg speaks during the 54th Munich Security Conference (MSC) in Munich, Germany, Feb. 16, 2018. The future role of the European Union (EU) as a global actor and its relations with Russia and the United States are among the key focuses of the 54th MSC, which officially opened here Friday afternoon.(Xinhua/Luo Huanhuan)