For U.S. officials who worked under former President Barack Obama, many of whom are now beginning or contemplating jobs in Joe Biden’s administration, the war in Yemen casts a long shadow. What started on their watch as a primarily internal power struggle has since metastasized into a messy and multilayered …

Few nations have seen their dreams and hopes dashed as quickly and ruthlessly as South Sudan. A mere two years after thousands thronged the streets of the capital, Juba, to celebrate independence from Sudan’s autocratic rule, the country descended into a brutal civil war. The fallout between President Salva Kiir …

Six separate terrorist attacks took place in Europe between late September and late November of last year—three in France, and one each in Germany, Austria and Switzerland. All six attacks were inspired by Salafi-jihadist ideology, which is, and will remain, a persistent terrorism threat to Europe and elsewhere in the …