The growing prevalence of terrorist ideologies that organize and encourage attacks without formal organizational structures will require analysts and policymakers to rethink their definitions.

Across ideologies, women and children are playing more prominent roles in terrorist groups.

A review of Norbert Röttgen, “Never Again Helpless! A Manifesto in Times of War” (published in German under the title “Nie wieder hilflos! Ein Manifest in Zeiten des Krieges”) (dtv, 2022).