the United Nations ever and again call to raise billions to help countries devastated by war or other mostly man-made catastrophes
I suggest we operate by the causality principle:
the countries who sell all those arms and military support to the warring parties or leave the natives no land to grow their own food simply use the money gained from their sales and appropriations to help the refugees they created build up all the cities their weapons destroyed provide a living for the farmers whose lands have been sold to agrobusinesses pay for the education of all the children unable to have schooling reconstruct the societies their greedy actions destroyed