Disputes - international:
in 2002, Gibraltar residents voted overwhelmingly by referendum to reject any "shared sovereignty" arrangement; the government of Gibraltar insists on equal participation in talks between the UK and Spain; Spain disapproves of UK plans to grant Gibraltar greater autonomy; Morocco protests Spain's control over the coastal enclaves of Ceuta, Melilla, and the islands of Penon de Velez de la Gomera, Penon de Alhucemas, and Islas Chafarinas, and surrounding waters; both countries claim Isla Perejil (Leila Island); Morocco serves as the primary launching site of illegal migration into Spain from North Africa; Portugal does not recognize Spanish sovereignty over the territory of Olivenza based on a difference of interpretation of the 1815 Congress of Vienna and the 1801 Treaty of Badajoz

Illicit drugs:
despite rigorous law enforcement efforts, North African, Latin American, Galician, and other European traffickers take advantage of Spain's long coastline to land large shipments of cocaine and hashish for distribution to the European market; consumer for Latin American cocaine and North African hashish; destination and minor transshipment point for Southwest Asian heroin; money-laundering site for Colombian narcotics trafficking organizations and organized crime