Ashab Al Yamim (Companions of the Right)

Force in Play

Claimed responsibility for at least three attacks; existence and structure unverified by governments

Four attacks in six days: synagogue explosion in Liege (March 9), a strike in Greece, an arson bombing at Rotterdam's synagogue (March 13), and an overnight blast at Amsterdam's only Orthodox Jewish school (March 14). No one has been killed, but the tempo is accelerating—the last two came less than 24 hours apart.

Updated May 30