A group of more than one hundred countries has agreed to a historic rewrite of global tax rules. Here’s what to know.

Tariffs have been applied over the years to protect homegrown industries and target competitors who are seen as using unfair trade practices. They impose costs on both importers and exporters and had been in decline until the recent U.S.-China trade war.

The Strategic Petroleum Reserve, the world’s largest stockpile of emergency crude oil, has helped shield the United States from energy supply crunches, but debate persists over its management.

The kafala system regulates the lives of tens of millions of migrant laborers in the Middle East, but growing outrage over human rights abuses, racism, and gender discrimination has fueled calls for …