Abstract
This research shows that sectarianism in Iraqi political system after 2003 constitutes a major impediment to the achievement of peaceful coexistence, Therefore, the study aims to reveal sectarianism in the Iraqi political system after the American occupation, and how these sectarianism affect the building of peaceful coexistence; because sectarianism prevents the achievement of the requirements of peaceful coexistence which logically mean its failure, and the research included two divisions, the first takes into consideration sectarianism in Iraqi political system after 2003, while the second discussed the role of political sectarianism in impeding peaceful.
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