This week’s G20 Finance Ministers and Central Bank Governors’ meeting take place as warning signs are flashing red. Economic woes are deepening and shocks are overwhelming countries throughout the world.   Those with the least capacity to weather shocks are feeling this most acutely: they are trading off heating for eating or struggling through yet another hunger crisis.   Yet, leadership and a coherent response plan are missing in action.   We have the tools to respond and mitigate the worst of these overlapping crises,...