This book combines well-known theoretical elements of various disciplines to form a broad picture of the role of ideologies in conflicts, in particular "the supply and demand side" of the ideological market: namely, why individuals choose particular ideologies and how radical groups, and organizations use them to address individuals' specific needs for the purpose of recruitment. This allows better understanding of the socio-psychological dynamics of social conflicts--why adopting particular ideologies is reasonable given certain socio-economic conditions, why individuals stick to destructive ideologies, and why they embrace major personal risks to join radical groups and advance the goals of these groups.