Jim Tankersley in the Washington Post:
A year after his 700-page opus “Capital in the Twenty-First Century” stormed to the top of America's best-seller lists, Thomas Piketty is out with a new argument about income inequality. It may prove more controversial than his book, which continues to generate debate in political and economic circles.
The new argument, which Piketty spelled out recently in the French newspaper Le Monde, is this: Inequality is a major driver of Middle Eastern terrorism, including the Islamic State attacks on Paris earlier this month — and Western nations have themselves largely to blame for that inequality.
Piketty writes that the Middle East's political and social system has been made fragile by the high concentration of oil wealth into a few countries with relatively little population. If you look at the region between Egypt and Iran — which includes Syria — you find several oil monarchies controlling between 60 and 70 percent of wealth, while housing just a bit more than 10 percent of the 300 million people living in that area. (Piketty does not specify which countries he's talking about, but judging from a study he co-authored last year on Middle East inequality, it appears he means Qatar, the United Arab Emirates, Kuwait, Saudia Arabia, Bahrain and Oman. By his numbers, they accounted for 16 percent of the region's population in 2012 and almost 60 percent of its gross domestic product.)
This concentration of so much wealth in countries with so small a share of the population, he says, makes the region “the most unequal on the planet.”