German Chancellor Angela Merkel (R) speaks to World Economic Forum (WEF) Founder and Executive Chairman Klaus Schwab during a plenary session at the 49th annual meeting of WEF in Davos, Switzerland, on Jan. 23, 2019. "I believe that multilateralism is indispensable for the prosperous development of the world," Merkel said here Wednesday. (Xinhua/Xu Jinquan)