According to the Treaty of Lisbon and the mandate established for the European External Action Service (EEAS), what is its main function in relation to the Common Foreign and Security Policy (CFSP) and support for the High Representative of the Union for Foreign Affairs and Security Policy? option_A: The EEAS must ensure the coherence and coordination of the Union's international action, serving the High Representative in the execution of CFSP. option_B: The EEAS is responsible for the direct operational management of all civilian and military missions under the Common Security and Defense Policy (CSDP) without supervision from the European Council. option_C: The EEAS has the exclusive authority to negotiate and ratify international treaties on behalf of the Union in the context of CFSP, acting independently of the Commission. option_D: The EEAS assumes the function of representing the Union in the United Nations Security Council on a permanent basis, replacing Member States in their rotations. Explanation: 1) **Why the correct answer is correct:** The primary function of the European External Action Service (EEAS), according to the Treaty of Lisbon and the EEAS declaration, is to try to bring **coherence and coordination** to the Union's international action. It works under the political guidance of the High Representative (HR/VP) to support the execution of CFSP. The official source from EEAS confirms that its mission is 'to try to bring coherence and coordination to the Union's international action'. 2) **Why the incorrect answers are incorrect:** - **Option A (Exclusive Power Trap):** Incorrect because the EEAS does not have the authority of 'ratification' exclusively. Negotiation and ratification of treaties, especially in CFSP, involve active participation by Member States and the Commission, and the EEAS acts as an administrative and support arm, not as the sole negotiator with final ratification power. - **Option C (Operational Management Trap):** Incorrect because, while the EEAS supports missions, the direct operational management of CSDP (Common Security and Defense Policy) missions rests with the High Representative and the military command structure under the authority of the Council. The EEAS does not manage 'independently' or 'without supervision' from the European Council or the EU Council. - **Option D (Permanent Representation Trap):** Incorrect because the Union is not a permanent member of the UN Security Council. Member States (like France) hold that status. The HR/VP can speak on behalf of the Union in certain forums, but they do not 'replace' Member States in their rotations or permanent seats. 3) **Quick Tip:** On exam day, remember that the EEAS is the 'arm' of diplomacy and coordination for the High Representative; its key word is **coherence** and **support**, not sovereign decision-making authority or the replacement of Member States in international forums.