Portugal–Spain border disputed between the two countries for two hundred years. A microstate existed previously on the border called Couto Misto. Districts on the Portuguese side of the border from North to South: Provinces on the Spanish side of the border from North to South: Portugal and Spain signed the Schengen Agreement in June 1991 which came into effect on 26 March 1995, making Portugal and Spain part of the Schengen area and thus the border then became an Open border. Portugal has since reintroduced border checks several times along the border with Spain, during the UEFA Euro 2004 championships, during the
Norway–Russia border that police and customs authorities would have to be regularly stationed at the border. A large amount of the initial traffic was from Russians who sold crafts and souvenirs at markets and fairs throughout Finnmark. From 1992 Norwegian authorities introduced limitations on the activity, resulting in a reduction in trans-border traffic. However, by 1998 the traffic had nearly hit 100,000. From 1991 to 1999 (Poland joining NATO), Norway was the only NATO country to share a land border with Russia. This caused a decrease in allied interest in Norway's border issue, leaving Norway more to itself in managing the relationship.