Stephen Gallagher of Societe Generale says Federal Reserve Chairman Jerome Powell was "wise" to refrain from jumping "into the heat of the argument" around the ongoing trade war between the U.S. and China. Subscribe to CNBC Life: http://cnb.cx/2wAkfMv Subscribe to CNBC International: http://cnb.cx/2gft82z Like our Facebook page / cnbcinternational Follow us on Instagram / cnbcinternational Follow us on Twitter / cnbci