An escalation of trade and tariffs tensions between the U.S. and China would have “costly” economic consequences around the world, Gita Gopinath, deputy managing director of the International Monetary Fund told CNBC on Wednesday. “We are seeing geopolitically driven trade around the world, which is why when you look at overall trade to GDP that’s holding up fine, but who’s trading with whom is certainly changing,” she said. The U.S.