From slowing global growth to rising debt, the world's central bankers and finance ministers have plenty on their plate as they gather in Bali this week for the annual meeting of the International Monetary Fund.
Yet they must now also turn their attention to a new threat: that a U.S.-China trade war which has so far has focused mostly on tariffs could soon spiral out of control, as Donald Trump begins to attack directly the supply chains upon which globalization depends.
