Portugal–Spain border Portugal–Spain border The Portugal–Spain border is the international boundary between Portugal and Spain. Referred to as "la Raya" in Spanish and "A Raia" in Portuguese (the stripe), the current demarcation is almost identical to that defined in 1297 by the Treaty of Alcañices. It is one of the oldest borders in the world. The Portugal–Spain border is 1,214 km (754 miles) long and considered the longest uninterrupted border within the European Union. The border is not defined for 18 km (11 miles) between the Caia river and Ribeira de Cuncos, because of the disputed status of Olivenza, which has been
United States border security concerns United States border security concerns The concept of border security in the United States of America shares a complex relationship with the persistent threat of terrorism. Border security includes the protection of land borders, ports, and airports. The relationship is unique in the sense that the federal government must constantly reevaluate and tweak its border security policy to address the perceived threats posed to the United States through the form of human terrorism or the smuggling and detonation of a weapon of mass destruction. Directly after the events of September 11, 2001, the Federal Government typically placed a higher priority