Abstract
As the United Kingdom (UK) voted to leave the European Union (EU), the future of Gibraltar, appears to be in peril. Like Northern Ireland, Gibraltar borders with EU territory and strongly relies on its ties with Spain for its economic stability, transports and energy supplies. Although the Gibraltarian government is struggling to preserve both its autonomy with British sovereignty and accession to the European Union, the Spanish government states that only a form of joint-sovereignty would save Gibraltar from the same destiny as the rest of UK in case of complete withdrawal from the EU, without any accession to the European Economic Area (Hard Brexit). The purpose of this paper is to present the concept of Condominium as a federal political system based on joint-sovereignty and, by presenting the existing case of Condominiums (i.e. Andorra). The paper will assess if there are margins for applying a Condominium solution to Gibraltar.