The United Kingdom and the European Union have signed a landmark treaty on Gibraltar, marking the end of years of complex post-Brexit negotiations and ushering in a new era of cooperation between the UK, Spain, Gibraltar, and the EU. The agreement is widely regarded as one of the most significant developments in UK-EU relations since Brexit.

The treaty introduces major changes to the movement of people and goods across the Gibraltar-Spain border. Under the new arrangements, routine immigration checks at the land frontier will be removed, allowing Gibraltar residents to enter Spain using residency cards, while Spanish citizens will be able to cross using their national identity cards. Around 15,000 cross-border workers are expected to benefit from faster and smoother daily travel.

To maintain security while facilitating free movement, immigration controls will instead be carried out at Gibraltar’s airport and port through joint UK-Spanish arrangements. The agreement is designed to preserve Gibraltar’s economic stability, strengthen regional cooperation, and reduce uncertainty that has persisted since the UK left the European Union in 2020.

Officials from the UK, the European Commission, Spain, and the Government of Gibraltar welcomed the treaty, describing it as a balanced solution that protects Gibraltar’s British sovereignty while promoting closer cooperation with neighbouring Spain. Spanish Foreign Minister José Manuel Albares said the agreement would help build greater trust, investment, and prosperity throughout the region.

Although the treaty enters into provisional application immediately, it still requires formal ratification through the relevant legislative processes. Nevertheless, the signing represents a historic milestone, removing one of the final unresolved issues left by Brexit and setting the stage for closer UK-EU cooperation on Gibraltar in the years ahead.

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