Pity the poor petro-states. Once so wealthy from oil sales that they could finance wars, mega-projects, and domestic social peace simultaneously, some of them are now beset by internal strife or are on the brink of collapse as oil prices remain at ruinously low levels. Unlike other countries, which largely finance their governments through taxation, petro-states rely on their oil and natural gas revenues. Russia, for example, obtains about 50% of government income that way; Nigeria, 60% ; and Saudi Arabia, a whopping 90% . When oil was selling at $100 per barrel or above, as was the case until 2014, these countries could finance lavish government projects and social welfare operations, ensuring widespread popular support. Now, with oil below $50 and likely to persist at that level, they find themselves curbing public spending and fending off rising domestic discontent or even incipient revolt. At the peak of their […]