This thesis aims to study obstacles which Turkey faces regarding EU accession. The main focus will be at the historical context and background information to clarify Turkey-EU relationship and institutional aspects such as; the Copenhagen criteria will be analyzed. Interaction between identity politics and Turkeys Europeanization project will be examined by analyzing arguments regarding this issue. The historical context is important for realizing in how Turkey's negotiation process is affected and how the process is evolved. By examining this, a more transparent understanding is going to develop in the issue of why Turkey never will be able to identify itself with the EU.Analysis regarding why Turkey as a secular state develops into an increasingly Islamized state is highlighted.