Continuity of government (COG)

Continuity of government (COG) is the principle of establishing defined procedures that allow a government to continue its essential operations in case of a catastrophic event such as nuclear war.

COG was developed by the British government before and during World War II to counter threats, such as that of the Luftwaffe bombing during the Battle of Britain. The need for continuity of government plans gained new urgency with nuclear proliferation.

During and after the Cold War countries developed such plans to avoid (or minimize) confusion and disorder due to a power vacuum in the aftermath of a nuclear attack.

In the US at least, COG is no longer limited to nuclear emergencies; the Continuity of Operations Plan was activated following the September 11 attacks.

By country


Canada built numerous nuclear bunkers across the country, nicknamed “Diefenbunkers” in a play on the last name of then-Prime Minister John Diefenbaker. In 2016, the Privy Council Office made an agreement with the Department of National Defence to open two bunkers for government officials amid the ongoing North Korean nuclear crisis.


The People’s Republic of China (PRC) once operated Underground Project 131, intended to be the PLA headquarters in Hubei during a nuclear conflict. Built due to the Sino-Soviet split during that portion of the Cold War, in 1981, the Project 131 site was turned over to the civilian authorities of the prefecture-level city of Xianning, where it is located.

Czech Republic

The K-116 facility under Zlíchov hill in western Prague was designated to house the Czechoslovak government in case of nuclear attack (together with the K-9 facility in Jihlava) and might still be used as the emergency headquarters of the Czech government and military.


During the Cold War, Denmark built two bunker complexes, named REGAN Vest and REGAN Øst (Danish: “REGeringsANlæg”, translated: “Government Complex West and Government Complex East”), in Jutland and Zealand respectively. The idea was to have half of the government and the royal family in one bunker, and the other half in the other, allowing continuity of government, even if one of the bunkers were destroyed or cut off.


The Centre d’opération des forces aériennes stratégiques (COFAS) is a hardened command centre for French nuclear forces at Taverny Air Base in Taverny, Val d’Oise. The alternate national command center is located at Mont Verdun near Lyon.

The hardened headquarters of Force océanique stratégique (FOST), France’s nuclear SSBN fleet, is at Brest, Finistère.


Germany operated a government bunker (Regierungsbunker) to house the German government, parliament and all federal personnel needed to keep the government working in the event of war or severe crisis. It was decommissioned in 1997.

Republic of Ireland

In Ireland, the National Security Committee (NSC) is the conduit for officials to communicate with the Taoiseach (Prime Minister) and/or cabinet members if the normal channel of communication with their minister became unavailable. Drafts of emergency powers legislation have been drawn up in secret, including legislation to deal with circumstances such as an attack on cabinet involving numerous deaths.

During the period of the Cold War, it was envisaged that cabinet ministers, senior civil servants and military advisers would use an underground nuclear bunker at Custume Barracks in Athlone in the event of a nuclear exchange. The bunker was equipped with a command and control centre with communications equipment – which had a hotline to the British government in Whitehall – a map room pointing out important areas for protection, kitchen, bedroom and bathroom facilities.


As of December 2003 an underground national crisis management center was being constructed at an undisclosed location in the Judaean Mountains under Jerusalem. Another command and control bunker is being built as part of the new Prime Minister’s Office complex in Givat Ram.

New Zealand

The New Zealand government believes the most likely disaster scenario to affect the government is a large earthquake in Wellington. The government has plans to move Parliament and essential staff to Devonport Naval Base in Auckland if such an event occurs.


The Norwegian government operates a nuclear bunker called Sentralanlegget in Buskerud County. The bunker is meant to accommodate the Norwegian Royal Family and the government in case of a nuclear/military attack on the nation, and also function as a wartime headquarters. There is also a bunker beneath Høyblokka in downtown Oslo.

Soviet Union and Russia

Map of the Metro-2 system as supposed by the United States military intelligence in 1991.

Very little in the public domain is known about Russia’s COG plans. One sprawling underground facility residing in tunnels cut into Mount Yamantau is likely to be related to the survival of Russia’s government, given its size and decades long construction history, with a construction start during the rule of Leonid Brezhnev (1964–82). KGB defector Colonel Oleg Gordievsky states that an organization, known as Directorate 15, was (or is) tasked with building and maintaining a network of hundreds of underground command bunkers for the Soviet leadership; this includes the vast site beneath Yamantau Mountain, which is often called Mezhgorye / Межго́рье after the closed city that is located nearby. However, there is speculation, due to its proximity to Chelyabinsk-70, that Yamantau is a 400-square-mile underground complex which houses nuclear warheads, missiles, launch controls, and several nuclear weapons factories designed to continue production after a hypothetical nuclear war begins.

The second command and control center in the Urals, after Yamantau, is similarly speculated to be underground and located near, or under, Kosvinsky Kamen. The site is believed to host the Russian Strategic Rocket Forces alternate command post, a post for the general staff built to compensate for the vulnerability of older Soviet era command posts in the Moscow region. In spite of this, the primary command posts for the Strategic Rocket Forces remains Kuntsevo in Moscow and the secondary is the Kosvinsky Mountain in the Urals. The facility at Kosvinsky, finished in early 1996, was designed to resist US earth-penetrating warheads and serves a similar role as the American Cheyenne Mountain Complex.

Further command centers, according to, include one near Chekhov, which is the Russian General Staff wartime command post, buried deep underground, and Sharapovo(ru) about 80 kilometres (50 mi) south of Moscow, built in the 1950s, Sharapovo is believed to have been the primary backup command center for the Soviet era leadership. Both Chekhov and Sharapovo are each suggested to have the capability to accommodate about 30,000 individuals, As an alternative to Sharapovo, a secondary political leadership base is located at Chaadayevka, some 650 kilometers southeast of Moscow near the city of Penza.

There is also said to be as many as 12 underground levels beneath the Russian capital of Moscow to protect the government in the Kremlin, known as the Main Directorate of special programs of the President (Glavnoye Upravlenie Specialnih Program: GUSP) (ru) the direct successor of the 15th Directorate of the KGB, which was established in 1977, GUSP is said to oversee, amongst other sites, a parallel track line alongside the Moscow metro, known as the ‘Kremlin line’ Metro-2 or D-6 to be used in an emergency. Two destinations of this system are suggested to be the old KGB headquarters, now the FSB headquarters, at Lubyanka Square, and the second being regarded as an enormous underground leadership bunker adjacent to Moscow State University. Another alleged subterranean destination, apart from the aforementioned underground town at Ramenki/Moscow State University is Vnukovo-2 airport. Despite official Russian state ambiguity, it is speculated that many of the Moscow bunkers are linked by an underground railway line.


During the Cold War, the Klara skyddsrum (“Klara shelter” or “Klara bunker”) was built underneath Stockholm. The bunker is designed to accommodate two thirds of the government and between 8,000 and 12,000 civilians in the case of a military attack on Stockholm. It is designed as a very large, two-story oval, with multiple entrances. During peacetime, parts of it are used as a parking garage. Sweden built over 65,000 fallout shelters in regular houses, and every county had at least one large hard-rock underground bunker that controlled a number of smaller bunkers that were located in the municipalities.


There is little public knowledge about continuity of government in Turkey. The cabinet and presidential offices, based in the capital of Ankara, have secondary sites in İstanbul and İzmir.

United Kingdom: Letters of last resort

The primary British COG headquarters is at the Ministry of Defence in Whitehall. The Central Government War Headquarters was previously maintained in a quarry complex near Corsham, Wiltshire. The above-ground support facility was RAF Rudloe Manor.

Service command centres are Northwood for the Royal Navy Trident SSBN force, and RAF High Wycombe for the Royal Air Force.

United States

Continuity of the national government was first threatened in late 1776, when British forces advanced toward the Continental capital at Philadelphia. On December 9 the Continental Congress passed a resolution in anticipation of a British capture:Resolved: That in case this Congress shall be under the necessity of removing from Philadelphia, it shall be adjourned to Baltimore.

The Congress was adjourned as planned three days later. Other relocations followed during the course of the Revolutionary War.

For most of its existence, the United States operated without a standing continuity plan. When British forces burned Washington in 1814, Secretary of State James Monroe received only a few hours’ notice to remove the government records. Although his staff saved many valuable records, much was nonetheless destroyed, and the next administration encountered a great deal of confusion.

In 1952 President Truman ordered all federal offices to develop their own continuity plans for the event of a civil defense emergency. Plans have been maintained and adapted since then, at times requiring the construction of secret facilities such as the emergency Congress facility in Greenbrier County, West Virginia. The current continuity policy is defined in National Security Policy Directive 51 and its implementation plan. The continuity plan was activated for the first time during the September 11, 2001 attacks.

The United States presidential line of succession is the order in which officials of the United States federal government assume the powers and duties of the office of president of the United States if the incumbent president becomes incapacitated, dies, resigns, or is removed from office. It was adopted in 1947, and last revised in 2006. The designated survivor is an individual in the line of succession, chosen to stay away from events such as State of the Union addresses and presidential inaugurations.

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