FILE – In this Dec. 1, 2018, file photo, U.S. President Donald Trump, second right, and China’s President Xi Jinping, second left, attend their bilateral meeting at the G20 Summit in Buenos Aires, Argentina. A U.S.-Chinese cease fire on tariffs gives jittery companies a respite but does little to resolve a war over Beijing’s technology ambitions that threatens to chill global economic growth. (AP Photo/Pablo Martinez Monsivais, File)