Cod Wars 30,000 tons. While Iceland came closest to withdrawing from NATO and expelling US forces in the Second Cod War, Iceland actually took the most serious action in all of the Cod Wars in the Third Cod War by ending diplomatic relations with the United Kingdom on 19 February 1976. Although Icelandic government was firmly pro-Western, the government linked Iceland's NATO membership with the outcomes of the fishery dispute. If a favorable outcome could not be reached, Iceland implied that it would withdraw from NATO. However, the government never explicitly linked the US Defence Agreement to the outcome of the dispute.
Fishing in the North Sea the 19th century large quantities of herring were produced in Scotland. Today mainly mackerel, Atlantic cod, whiting, coalfish, European plaice, and sole are caught. In addition, common shrimp, lobster, and crab, along with a variety of shellfish are harvested. In recent decades, overfishing has left many fisheries unproductive, disturbing the marine food chain dynamics and costing jobs in the fishing industry. Herring, cod and plaice fisheries may soon face the same plight as mackerel fishing which ceased in the 1970s due to overfishing. Since the 1960s, various regulations have attempted to protect the stocks of fish such as limited fishing