الفهرس 
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Abstract
from the ancient times, language has been used as an ingenious device for transmission of ideology and for manipulation of the minds of the audience by those who have been in power. Ideologies find their clearest articulation in language. Hence, a powerful way of examining ideological structure is through the examination of language. This thesis introduces the transdisciplinary research movement of Critical Discourse analysis (CDA), beginning with its definitions and recent examples of CDA work. In addition, approaches to CDA such as the three-dimensional (Fairclough), socio-cognitive (van Dijk), discourse historical (Wodak) are outlined as well as the relation of CDA to other branches of linguistics. Next, this thesis provides a background of the historical, philosophical and linguistic origins, tenets and principles of CDA. The data consists of former President Hosny Mubarak’s speeches during the January 25th Revolution. The obtained results should prove the fact that the application of CDA for the analysis of political addresses reveals genre conventions, social and situational context, and outlines the formation of power and ideological relations on the text-linguistic level.