After winning the 2006 Palestinian Legislative Council (PLC) elections and subsequently taking control of the Gaza Strip in the summer of 2007, the Palestinian Hamas – a hybrid political, social and military actor – undertook a complex process to ascertain authority and control over Gaza. The article focuses on understanding Hamas’s performance as a political party and a “rebel government” as well as the impact of this newly acquired role on the group’s strategy. Relying on primary sources, field-work and interviews with members of the Hamas government and its security sector, the study looks at Hamas’s role as a security provider and analyses the complex relationship between the institutionalized security sector and the group’s insurgent a...