Youth protest during the seventh annual Brussels youth climate march on February 21st, 2019, in Brussels, Belgium.
A guide to get you caught up—quickly.
Coordinated bombings in Brussels may have been in the works for some time, aided by an underworld where crime and extremism blur together.
Brussels leaders have long sought to make its Muslim communities invisible, but haven't openly acknowledged that was their goal.
An expert weighs in on the Islamic State's cycle of violence.
Donald Trump and Ted Cruz are playing right into ISIS's hands.