Iceland was the neutral host of the historic 1986 Reagan–Gorbachev summit in Reykjavík, which set the stage for the end of the Cold War. Iceland's principal historical international disputes involved disagreements over fishing rights. Conflict with the United Kingdom led to a series of so-called Cod Wars, which included confrontations between the Icelandic Coast Guard and the Royal Navy over British fishermen: in 1952–1956 due to the extension of Iceland's fishing zone from , in 1958–1961 following a further extension to , in 1972–1973 with another extension to , and in 1975–1976 after another extension to .