In the linguistic sense, the Arabic Word "jihad" means struggling or striving and applies to any effort exerted by anyone. In this sense, a student struggles and strives to get an education ans pass course work: An employee, a politician his/her job and maintain good relations with his/her employer the term strive or struggle may be used for/by Muslims as well as non-Muslims; for example, Allah, the One and only True God says in the Quran. Though al-Qaeda and the Islamic State share the same ultimate goal-establishing a global caliphate ruled by an austere version of sharia (Islamic law)- each group maintains a distinct appriach to revolutionary warfare. Al-Qaeda has come to favor covert expansion, unacknowledged affiliates, and a relatively before engaging in open warfare with its foes. By contrast, the Islamic State believes that the time for a broader military The group combines shocking violence with an effective propaganda apparatus in an effort to quickly build its base of support. The present book aims at catering to this curiosity of the readers.