By Roberta Rampton and Michael Martina HANGZHOU, China (Reuters) – U.S. President Barack Obama said on Sunday bilateral talks with China’s Xi Jinping had been “extremely productive”, as world leaders gathered for a G20 summit expected to address sluggish global economic growth and the looming spectre of protectionism. Some G20 … Continue reading China, U.S. talks ‘extremely productive’ ahead of G20 as trade issues loom