Say that your country is blessed with natural resources. Oil, gas, minerals – it has it all. The future looks good. But deep down you worry that the bonanza could turn into a bust – maybe you live in Africa and have seen how windfalls have been wasted before. How do you know that’s not going to happen now? Are there any tell-tale signs of sound management of “commodity wealth”? Marcelo Giugale, the World Bank’s Director of Economic Policy and...