What is the main function of the European External Action Service (EEAS) within the framework of the Common Foreign and Security Policy (CFSP) of the European Union? option_A: It has the exclusive competence to negotiate and sign all international treaties on defense matters on behalf of the EU. option_B: Its objective is to try to bring coherence and coordination to the Union's international action under the political guidance of the High Representative. option_C: It acts as the supreme court to resolve disputes between member states on the interpretation of the Neighbourhood Policy. option_D: Its function is to manage the application of competition and state aid regulations in the internal market. explanation: 1) **Why the correct answer is correct**: According to official sources of the European External Action Service (EEAS), its main function is 'to try to bring coherence and coordination to the Union's international action'. The EEAS works under the political guidance of the High Representative of the Union for Foreign Affairs and Security Policy (HR/VP), who is also Vice-President of the Commission. The Treaty of Lisbon clearly establishes this role of coordination to ensure that the EU acts in a unified manner on the international stage. 2) **Why the incorrect options are incorrect**: - The **option A** is incorrect because it uses the concept of 'exclusive competence' incorrectly. While the EEAS supports external action, the negotiation and signing of international treaties, especially in defense matters, is a shared competence and often involves direct participation by member states and the Council, not an exclusivity of the EEAS. - The **option B** is incorrect because it describes a function of the **European Commission** (specifically the Directorate-General for Competition) in relation to the internal market, not of the EEAS, which focuses on external action. - The **option D** is incorrect because it confuses the political and diplomatic function of the EEAS with the judicial power of the **Court of Justice of the European Union**. The EEAS does not have the power to resolve legal disputes between member states. 3) **Quick Tip**: For exam day, remember that the EEAS is the 'diplomatic arm' of the EU; its key word is 'coherence' and 'coordination', not 'jurisdiction' or 'exclusive competence' in final decision-making.