In Mauritania, northwestern Africa, slavery is a fact of modern life. It's estimated that 10-20 percent of the country's 3.5 million people are still enslaved in a system rooted in ethnic discrimination.
Thousands of Yazidis were trapped on Mount Sinjar after being forced to flee their homes by Islamic State terrorist militias. Many have fled to Syria; others have remained in Iraq. The US has provided food and water, although Washington no longer sees the need for a rescue mission. Their situation is desperate.