Iceland expands its fishing zone, putting it into conflict with the United Kingdom, beginning the Cod Wars.

The Cod Wars (Icelandic: orskastrin; also known as Landhelgisstrin, lit.'The Coastal Wars'; German: Kabeljaukriege) were a series of 20th-century confrontations between the United Kingdom (with aid from West Germany) and Iceland about fishing rights in the North Atlantic. Each of the disputes ended with an Icelandic victory.Some Icelandic historians view the history of Iceland's struggle for control of its maritime resources in ten episodes, or ten cod wars. Fishing boats from Britain were sailing to waters near Iceland in search of their catch since the 14th century. Agreements struck during the 15th century started a centuries-long series of intermittent disputes between the two countries. Demand for seafood and consequent competition for fish stocks grew rapidly in the 19th century.

The modern disputes or wars began in 1952 after Iceland expanded its territorial waters from 3 to 4 nautical miles (7 kilometres) based on a decision by the International Court of Justice. The United Kingdom responded by banning Icelandic ships landing their fish in British ports. In 1958, after a United Nations conference at which several countries sought to extend the limits of their territorial waters to 12 nmi (22 km) at which no agreement was reached, Iceland unilaterally expanded its territorial waters to this limit and banned foreign fleets from fishing in these waters. Britain refused to accept this decision. This led to a modern series of confrontations with the United Kingdom and other western European countries that took place in three stages over 20 years: 19581961, 197273 and 197576. A threat of damage and danger to life was present, with British fishing boats escorted to the fishing grounds by the Royal Navy while the Icelandic Coast Guard attempted to chase them away and use long hawsers to cut nets from the British boats; ships from both sides suffered damage from ramming attacks.

Each confrontation concluded with an agreement favourable for Iceland. Iceland made threats it would withdraw from NATO, which would have forfeited NATO's access to most of the GIUK gap, a critical anti-submarine warfare chokepoint during the Cold War. In a NATO-brokered agreement in 1976, the United Kingdom accepted Iceland's establishment of a 12-nautical-mile (22 km) exclusive zone around its shores where only its own ships could fish and a 200-nautical-mile (370-kilometre) Icelandic fishery zone where other nations' fishing fleets needed Iceland's permission. The agreement brought to an end more than 500 years of unrestricted British fishing in these waters. As a result, British fishing communities lost access to rich areas and were devastated, with thousands of jobs lost. The UK abandoned its "open seas" international fisheries policy and declared a similar 200-nautical-mile zone around its own waters. Since 1982, a 200-nautical-mile (370-kilometre) exclusive economic zone has been the international standard under the UN Convention on the Law of the Sea.

The term "cod war" was coined by a British journalist in early September 1958. None of the Cod Wars meet any of the common thresholds for a conventional war, and they may more accurately be described as militarised interstate disputes. There is only one confirmed death during the Cod Wars: an Icelandic engineer, who was accidentally killed in the Second Cod War while he was repairing damage on the Icelandic patrol boat gir after a collision with the British frigate Apollo. They collided on 29 August 1973. A trawlerman from Grimsby was seriously wounded on 19 February 1976, hit by the loose cordage after an Icelandic gunboat cut his vessel's net.Several explanations for the Cod Wars have been put forward. Recent studies have focused on the underlying economic, legal and strategic drivers for Iceland and the United Kingdom, as well as the domestic and international factors that contributed to the escalation of the dispute. Lessons drawn from the Cod Wars have been applied to international relations theory.

Iceland (Icelandic: Ísland; [ˈistlant] (listen)) is a Nordic island country in the North Atlantic Ocean and the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its surrounding areas) is home to over 65% of the population. Iceland is the only part of the Mid-Atlantic Ridge that rises above sea level, and its central volcanic plateau is erupting almost constantly. The interior consists of a plateau characterised by sand and lava fields, mountains, and glaciers, and many glacial rivers flow to the sea through the lowlands. Iceland is warmed by the Gulf Stream and has a temperate climate, despite a high latitude just outside the Arctic Circle. Its high latitude and marine influence keep summers chilly, and most of its islands have a polar climate.

According to the ancient manuscript Landnámabók, the settlement of Iceland began in 874 AD when the Norwegian chieftain Ingólfr Arnarson became the first permanent settler on the island. In the following centuries, Norwegians, and to a lesser extent other Scandinavians, emigrated to Iceland, bringing with them thralls (i.e., slaves or serfs) of Gaelic origin.

The island was governed as an independent commonwealth under the native parliament, the Althing, one of the world's oldest functioning legislative assemblies. Following a period of civil strife, Iceland acceded to Norwegian rule in the 13th century. The establishment of the Kalmar Union in 1397 united the kingdoms of Norway, Denmark, and Sweden. Iceland thus followed Norway's integration into that union, coming under Danish rule after Sweden's secession from the union in 1523. The Danish kingdom forcefully introduced Lutheranism to Iceland in 1550.In the wake of the French Revolution and the Napoleonic Wars, Iceland's struggle for independence took form and culminated in independence in 1918 with the establishment of the Kingdom of Iceland, sharing through a personal union the incumbent monarch of Denmark. During the occupation of Denmark in World War II, Iceland voted overwhelmingly to become a republic in 1944, thus ending the remaining formal ties with Denmark. Although the Althing was suspended from 1799 to 1845, the island republic has been credited with sustaining the world's oldest and longest-running parliament.

Until the 20th century, Iceland relied largely on subsistence fishing and agriculture. Industrialization of the fisheries and Marshall Plan aid following World War II brought prosperity, and Iceland became one of the wealthiest and most developed nations in the world. It became a part of the European Economic Area in 1994; this further diversified the economy into sectors such as finance, biotechnology, and manufacturing.

Iceland has a market economy with relatively low taxes, compared to other OECD countries, as well as the highest trade union membership in the world. It maintains a Nordic social welfare system that provides universal health care and tertiary education for its citizens. Iceland ranks high in economic, democratic, and social stability, as well as equality, ranking third in the world by median wealth per adult. In 2020, it was ranked as the fourth-most developed country in the world by the United Nations' Human Development Index, and it ranks first on the Global Peace Index. Iceland runs almost completely on renewable energy.

Icelandic culture is founded upon the nation's Scandinavian heritage. Most Icelanders are descendants of Norse and Gaelic settlers. Icelandic, a North Germanic language, is descended from Old West Norse and is closely related to Faroese. The country's cultural heritage includes traditional Icelandic cuisine, Icelandic literature, and medieval sagas. Iceland has the smallest population of any NATO member and is the only one with no standing army, with a lightly armed coast guard.