This paper discusses issues relating to the domestic pricing of petroleum in oil-producing countries. It finds that in most major oil-exporting countries, government policies keep domestic prices below free-market levels, resulting in implicit subsidies that equaled 3.0 percent of GDP, on...

This paper studies the evolution of worldwide military spending during 1970-2018. It finds that military spending in relation to GDP is converging, but into three separate groups of countries. In the largest group, responsible for 90 percent of worldwide spending, outlays have remained...