On July 14, 2026, the government of the United Kingdom signed an agreement with the European Union and the European Atomic Energy Community easing border controls in Gibraltar, an overseas territory of the U.K. The explanatory memorandum that accompanies the agreement states that the “treaty legally concludes the process for the UK, including Gibraltar, to exit the EU.” The government said the treaty delivers “economic and trade certainty for the people and businesses of Gibraltar, safeguards British sovereignty and protects the autonomous operation of UK military facilities.”Gibraltar-Spain BorderWhile the treaty addresses several items, one of the most pressing is the shared land border between Gibraltar and Spain. More than half of Gibraltar’s workforce—around 15,000 people—cross this border each day. Border controls implemented since the U.K....