Topic of this diploma work is Common Foreign and Security Policy (CFSP) - legal aspects. CFSP is one of policie sof EU based on intergovermental cooperation in foreign relations and defence policy which includes Common Security and Defence Policy (CSDP). The second part of the diploma work describes history of CFSP from WW 2 to describing of Treaty on European Union (TEU). The third part of diploma work describe CFSP of EU in TEU from 90's to current wording. Main topics are instruments and institutions and voting procedure. Marginally I write something about Common Commercial Policy and Cooperation with Third States in the fourth part of diploma work. The last part of diploma work is about the CSDP and EU millitary and civil missions. The ...