 Complete the following phrase:  He is the ideologue and alleged leader of the Great Eastern Islamic Raiders Front İBDA-C, a militant Islamist group present in Turkey. He was arrested on 29 December 1998 for allegedly trying to overthrow the constitutional order by force. Subsequently, following the İBDA-C concept of leaderless resistance, further attacks on banks, synagogues, churches, places serving alcohol and TV stations were claimed by groups who said they were part of İBDA-C. The 