This paper centers on the challenge that fundamentalist groups -such as the Israeli ultra-Orthodox community (the Haredim) -pose for citizenship. It focuses on two issues: challenges centering on contribution to and sacrifice for the Israeli nation-state; and alternatives that fundamentalism poses to definitions of citizenship. Empirically, it is based on research in three arenas: service in the Israeli military; a voluntary organization aiding state agencies after terror attacks (ZAKA), and a charitable association offering help in health and social welfare (Yad Sarah). Two trendschallenges to concepts of security and the state, and the weakening of the state in the economic sphere and social services -have opened up spaces for fundamentalist groups to operate in civil society and complement the state. The Haredi community has gradually developed a new concept of inclusion that both fits the state-centred view of citizenship and their own fundamentalist perspective.