As a journalist, book author, and sometime adviser with frequent visits to Afghanistan between 2002 and 2015, I offer this distillation of lessons that we might learn from the United States’ longest …

The region is accustomed to cycles of protest and political upheaval, so it’s better not to bank on successful revolutions.

The Democratic and Republican presidential contenders have begun defining their approach to major foreign policy issues as they jockey for position in their parties’ primaries.

Over the past decade, illiberal populist leaders from across the political spectrum have won elections and taken power in many of the world’s biggest democracies, from the United States to India, the…