competentes da parte anfitriã.2. Nenhuma disposição do presente acordo pretende ser ou será interpretada no sentido de derrogar a quaisquer direitos que tenham sido outorgados, por força de outros acordos, a um Estado-Membro da UE ou a qualquer outro Estado que contribua para a EUPOL Proxima ou respectivo pessoal.Artigo 17.oConvénios adicionaisO chefe de missão e as autoridades administrativas da parte anfitriã celebrarão os convénios adicionais que se afigurem necessários para a execução do presente acordo.Artigo 18.oEntrada em vigor e termo de vigência1. O presente acordo entra em vigor na data em que as partes notificarem por escrito o cumprimento dos requisitos internos para a entrada em vigor.2. O presente acordo pode ser alterado mediante acordo mútuo, por escrito, entre as partes.3. O presente acordo permanecerá em vigor até à partida definitiva da EUPOL Proxima ou de todo o seu pessoal.4. O presente acordo poderá ser denunciado mediante notificação por escrito à outra parte. A denúncia produzirá efeitos 60 dias após a recepção, pela outra parte, da notificação de denúncia.5. O termo de vigência ou a denúncia do presente acordo não afectam os direitos ou obrigações decorrentes da sua execução antes da sua cessação ou denúncia.A. Letter from the European UnionSkopje, 11 December 2003The Government of the former Yugoslav Republic of MacedoniaDear Sir,I have the honour to propose that, if it is acceptable to your Government, this letter and your confirmation shall together take the place of signature of the Agreement between the European Union and the former Yugoslav Republic of Macedonia on the status and activities of the European Union Police Mission in the former Yugoslav Republic of Macedonia (EUPOL Proxima).The text of the aforementioned Agreement, herewith annexed, has been approved by decision of the Council of the European Union on 11 December 2003.This letter also constitutes the notification, on behalf of the European Union, in accordance with Article 18.1 of the Agreement.Please accept, Sir, the assurance of my highest consideration.For the European Union>PIC FILE= "L_2004016PT.007101.TIF">Alexis BrouhnsEU Special RepresentativeB. Letter from the Former Yugoslav Republic of Macedonia>PIC FILE= "L_2004016PT.007201.TIF">(courtesy translation)Skopje, December 11, 2003Dear Sir,On behalf of the Government of the Republic of Macedonia I have the honor to acknowledge receipt of your letter of today's date regarding the signature of the Agreement between the Republic of Macedonia and the European Union on the status and activities of the European Union Police Mission in the Republic of Macedonia (EUPOL Proxima), together with the attached text of the Agreement.I consider this Exchange of Letters as equivalent of signature.However, I declare that the Republic of Macedonia does not accept the denomination used for my country in the abovementioned Agreement, having in mind that the constitutional name of my country is the Republic of Macedonia.Please accept, Sir, the assurances of my highest consideration.Igor DzundevC. Letter from the European UnionSkopje, 11 December 2003Dear Sir,I have the honour to acknowledge receipt of your letter of today's date.The European Union notes that the Exchange of Letters between the European Union and the Former Yugoslav Republic of Macedonia, which takes the place of signature of the Agreement between the European Union and the former Yugoslav Republic of Macedonia on the status and activities of the European Union Police Mission in the former Yugoslav Republic of Macedonia (EUPOL Proxima), has been accomplished and that this cannot be interpreted as acceptance or recognition by the European Union in whatever form or content of a denomination other than the "former Yugoslav Republic of Macedonia".Please accept, Sir, the assurance of my highest consideration.For the European Union>PIC FILE= "L_2004016PT.007301.TIF">Alexis BrouhnsEU Special Representative