This book constitutes a journey into the obscure field of sectarian-guided discourses of radical Islamist groups. It provides new insights into the ideological mechanisms utilized by such organizations to incite sectarian conflicts and recruit local and foreign guardians to their alleged cause. This book examines diverse aspects and dimensions of the discourses of Sunni-based ISIS and Shia-based al-Hashd al-Shaabi and explores manipulative and ideological discursive strategies utilized by media outlets associated with these groups. It delves into linguistic and contextual activities, implicit and explicit messages within the discourses of various media outlets operating in the heart of the Middle East. It also scrutinizes and explains aspects of politicization, religionization and sectarianization within the media discourse of terrorist groups in the digital era.