More than 550 Western women have moved to Syria and Iraq to join the “Islamic State ofIraq and Syria” (ISIS), showing a success of ISIS in attracting women from the West that noother jihadist group had before. To explain the reasons for such success, it is important tounderstand how ISIS lures women from the West, why ISIS persuasion tools are so successful,what motivates women to join such a notorious terrorist group, famous for its brutalviolence, mistreatment and enslavement of women and what role women expected to play in the“Islamic State.” Understanding the motives why ISIS Western female migrants left theirWestern countries of residence and moved to ISIS-controlled territories is crucial to findappropriate measures to prevent and stop the radicalization of women, to cut the supportthat ISIS receives from its female sympathizers, to properly treat female returnees and toprepare appropriate measures against women ready to plot against their countries ofresidence in the name of ISIS goals.