Three Gorges Dam
EnergyThe world's largest hydropower station by installed capacity, at 22.5 GW, and the main flood-control structure on the Yangtze.
By terms of the 1960 Treaty of Establishment that created the independent Republic of Cyprus, the UK retained full sovereignty and jurisdiction over two areas of almost 254 square kilometers - Akrotiri and Dhekelia. The larger of these is the Dhekelia Sovereign Base Area, which is also referred to as the Eastern Sovereign Base Area.
The National Infrastructure Index maps the physical assets national life runs on — power stations and grids, water systems, ports, railways and airports, data networks, payment systems and launch sites. Each asset is placed in a Strategic Infrastructure capability group, so it can be read against the ratings in the National Capability index above.
Assets are chosen for how much of the economy and state depends on them and how hard they would be to replace. Each card records what the asset is, the category it belongs to, what it does and where it is.
Example assets. These twenty cards are modelled on China's most critical infrastructure and show on every nation page until each nation's own assets are mapped.
The world's largest hydropower station by installed capacity, at 22.5 GW, and the main flood-control structure on the Yangtze.
A 16 GW dam on the Jinsha River, built around sixteen 1 GW turbines, the largest single units in service.
A ±1,100 kV direct-current line carrying 12 GW more than 3,000 km from Xinjiang's power bases to the eastern grid.
China's first large commercial nuclear plant, in service since 1994, with much of its output sold to Hong Kong.
A canal carrying Yangtze basin water more than 1,400 km north from the Danjiangkou Reservoir to Beijing and Tianjin.
The 1,318 km trunk line between the two largest cities, opened in 2011 and one of the busiest high-speed routes in the world.
The world's busiest container port since 2010, including the automated Yangshan deep-water terminals.
The world's largest port by cargo tonnage, handling iron ore, crude oil and coal for the eastern industrial belt.
The capital's second international hub, opened in 2019 around one of the largest single terminal buildings in the world.
A 55 km bridge and undersea tunnel system linking the western and eastern shores of the Pearl River Delta, opened in 2018.
The 1,956 km line from Xining to Lhasa, crossing the Tanggula Pass at 5,072 m, the highest railway in the world.
One of eight national data centre hubs under the East Data, West Computing programme, hosting major cloud providers.
A 2,000 km quantum key distribution trunk line through Jinan and Hefei, completed in 2017 for secure government and bank links.
CIPS clears and settles cross-border payments in renminbi, launched in 2015 to extend the currency's international reach.
The coastal launch site for Long March 5 heavy-lift rockets, used for the Tiangong station modules and lunar and Mars missions.
China's first launch site, founded in 1958 in the Gobi Desert, and the base for every crewed Shenzhou mission.
The national satellite navigation system, providing global positioning and timing since 2020 from its Beijing control segment.
The world's largest known rare-earth deposit and the core of China's rare-earth mining and refining supply chain.
A weir and channel system built around 256 BC that still irrigates much of the Chengdu Plain's farmland.
China's leading maker of 3D NAND flash memory, central to the drive for a domestic semiconductor supply.
The National Development Index tracks the events that move a nation's capability — policy decisions, technological milestones, economic turns and external shocks — and places each one on the record with the date it happened and what followed from it. It is the narrative counterpart to the indices: where a rating says where Dhekelia stands, the index says how it arrived there.
Recent developments cover the current cycle, close enough that their consequences are still unfolding. Historical developments are the inflection points behind the present position — the decisions and events a reader needs in order to read the ratings above in context.
When Cyprus achieved independence from the British Empire in 1960, the United Kingdom kept full sovereignty and jurisdiction over Akrotiri and Dhekelia — two areas totalling almost 254 square kilometres — under the Treaty of Establishment signed by the UK, Greece, Turkey, the Cypriot president and the Turkish Cypriot representative, registered at the United Nations as treaty 5476. The arrangement guaranteed continued British use of military bases including RAF Akrotiri and a British Army garrison, exploiting the island's position at the eastern edge of the Mediterranean near the Suez Canal and the Middle East. Appendix O to the treaty set out the philosophy of administration, and the UK committed not to use the areas for civilian purposes.
In the early 1960s the British installed a radar system known as Project Sandra in the base areas. It provided the foundation for later, more capable surveillance infrastructure on the island.
The legal system of the territory consists of the laws of the Colony of Cyprus as of August 1960, amended as necessary. This gave the new territory an immediate, functioning legal framework distinct from that of the Republic of Cyprus.
In July and August 1961 a series of bomb attacks targeted the pipeline carrying fresh water to the Dhekelia Sovereign Base Area, breaching it twelve times. The campaign exposed the vulnerability of the base's essential utilities to sabotage from outside its boundaries.
In the early 1970s the United States constructed an over-the-horizon radar named Cobra Shoe, capable of observing aircraft operations and missile tests in southern Russia, augmenting the earlier British Project Sandra system. It was operated by the RAF on behalf of the U.S. Air Force, and American use of the base was concealed from the Cypriot government because of diplomatic sensitivities. The installation turned the bases into a significant Cold War intelligence asset.
Although reports suggest London had been considering reducing its presence on the island before 1974, the Turkish invasion made withdrawal strategically difficult. The government instead reinforced the garrison, and the British military presence endured for the following fifty years.
Following a military coup by the Cypriot National Guard, Turkish forces invaded the north of the island, leading to the establishment of the internationally unrecognised Turkish Republic of Northern Cyprus. The status of the Sovereign Base Areas was unaffected, and the Turkish advance stopped at the Dhekelia boundary to avoid conflict with the United Kingdom. Greek Cypriot refugees were allowed to pass through Dhekelia and received humanitarian aid, with those from Achna founding the new village of Dasaki Achnas inside the base area.
A tented refugee camp had been established at Happy Valley in the Episkopi Cantonment to house Turkish Cypriots fleeing Limassol and surrounding villages after the 1974 invasion. In 1975 they were flown out of RAF Akrotiri via Turkey to northern Cyprus. Some Greek Cypriot refugees remained housed on base land at Trachoni and Kolossi.
From 1990 the department, assisted by a large volunteer effort, has monitored sea turtle nesting success on Sovereign Base Area beaches. The long-running programme underpins the territory's conservation record.
For copyright reasons BFBS Television was restricted to the Sovereign Base Areas or encrypted in 1997, and its analogue transmitters were switched off in 2009. Viewers thereafter received the service only via satellite.
Protests were held at the bases in July 2001 against a British plan to construct radio masts as part of a worldwide upgrade of military communications posts. The dispute highlighted friction between the base administration and surrounding Cypriot communities.
The 2002 amendment of the British Nationality Act 1981 bestowed British citizenship on all other British Overseas Territories citizens, but made no provision for those with a sole personal connection to Akrotiri and Dhekelia. The stated reason was the 1960 commitment not to use the areas for civilian purposes, leaving those connected to the territory able only to claim British Overseas Territories citizenship in theory.
Identified as an Important Bird Area in 1989, the wetlands were recognised under the Ramsar Convention in 2003, and 60% was designated a Special Protection Area in 2010. Over 300 bird species have been recorded there, and the ferruginous duck has nested since 2005.
As part of the Annan Plan for the reunification of Cyprus, the UK offered to give up 117 square kilometres of base farmland. The plan was rejected, and the offer lapsed, leaving the boundaries of the Sovereign Base Areas unchanged.
A research project jointly commissioned by the British and Cypriot governments examined claims that electromagnetic fields from the base antennas caused illness. Reporting in 2005, it found no evidence of health problems, defusing a significant local controversy over the communications installations.
On 30 June 2005 the Cypriot parliament unanimously passed a resolution, originally proposed by Vassos Lyssarides, concerning the legal status of the Sovereign Base Areas. It formalised Cypriot political objection to the continuing British sovereign presence.
The ordinance, implementing the provisions of the EU Habitats Directive, gave sea turtles in Cyprus protection as priority species. It later provided the legal basis for designating Special Areas of Conservation within the base areas.
The British Minister for the Armed Forces stated in April 2026 that there would be no negotiation about the bases or the ceding of sovereignty over them. The declaration closed off speculation about a change of status following the 2026 attacks.
On 2 March 2026 RAF forces intercepted two further drones near the island, prompting the evacuation of both bases and a Cypriot government order to evacuate Akrotiri village. The UK announced reinforcement of its forces with additional fighter aircraft and Wildcat helicopters carrying anti-drone Martlet missiles, and deployment of the air defence destroyer HMS Dragon to the region.
On 1 March 2026 a drone struck the Akrotiri base, causing minor runway damage and no casualties; the Ministry of Defence confirmed it had not been launched from Iran. The attack preceded Prime Minister Keir Starmer granting permission for U.S. forces to use the bases in strikes, marking the first direct assault on the territory.
After multiple Iranian airstrikes on Cyprus during the 2026 Iran War, Greece sent the advanced FDI HN frigate Kimon and the MEKO-class frigate Psara to the Eastern Mediterranean. The deployment internationalised the defence of the island and its British installations.
During a 2024 visit the British prime minister acknowledged the secrecy of operations flown from the bases, saying the world was relying on the personnel there. The flights underlined the continuing operational value of Cyprus for British intelligence gathering in the Middle East.
The UK's 2020 departure from the EU raised concerns about the future status of roughly 15,000 Cypriots, who are EU citizens, working in the Sovereign Base Areas. The bases' economic dependence on local labour made the question politically sensitive on both sides.
Formal talks between the United Kingdom and the Republic of Cyprus began in October 2017. They addressed outstanding questions over the status and administration of the Sovereign Base Areas.
In 2017 trapping activity in the base areas dropped by 77.5%, with estimated bird deaths falling to 180,000. The sharp reduction marked a significant conservation success for the base administration.
Illegal trapping with mist nets and limesticks, run largely by organised crime gangs earning over 15 million euros annually, killed an estimated 800,000 birds at Dhekelia in 2016. A 2015 survey had estimated over 2 million birds killed across Cyprus, including over 800,000 on British Territories.
In December 2015 five Special Areas of Conservation were designated in the Cyprus Sovereign Base Areas under the Protection and Management of Nature and Wildlife Ordinance. The designations support the wider NATURA 2000 network across Cyprus and Europe.
An agreement signed in January 2014 ensured that residents and property owners within the British Bases enjoy equal rights for the development of property. It addressed a long-standing grievance of Cypriots living and owning land inside the base areas.
On 27 August 2013 the Cypriot foreign minister sought to calm public concern by saying the British bases were unlikely to play a major part in any intervention in Syria. Two days later, Cypriot and British media speculated that long-range ballistic missiles fired from Syria, potentially carrying chemical weapons, could strike Cyprus in retaliation for British involvement against the Assad government.
On 15 December 2012 the UK Secretary of State for Defence set out in a written statement to the House of Commons the results of a review of the operation of the Sovereign Base Area military bases conducted by Lord Ashcroft. The review formed part of the periodic reassessment of Britain's military footprint on Cyprus.
Following assessments and surveys into the effects of base activity on wildlife, the SBA Administration published an environmental management plan for the Akrotiri Peninsula in September 2012. It provided a framework for reconciling military use with conservation obligations.
A British press report in January 2010 claimed that budgetary pressures arising from the Great Recession had led the Ministry of Defence to consider withdrawing the garrison and ending Cyprus's use as a staging point for ground forces. The controversial plans underlined the recurring question of the bases' long-term affordability.
When the areas under the effective control of the Republic of Cyprus switched from the Cypriot pound to the euro in January 2008, the Sovereign Base Areas followed suit. This made them the only territory under British sovereignty officially using the euro, tying the bases' economy closely to that of the Republic.
By terms of the 1960 Treaty of Establishment that created the independent Republic of Cyprus, the UK retained full sovereignty and jurisdiction over two areas of almost 254 square kilometers - Akrotiri and Dhekelia. The larger of these is the Dhekelia Sovereign Base Area, which is also referred to as the Eastern Sovereign Base Area.
Eastern Mediterranean, on the southeast coast of Cyprus near Famagusta
34 59 N, 33 45 E
Europe
about three-quarters the size of Washington, DC
27.5 km
British extraterritorial rights also extended to several small off-post sites scattered across Cyprus; of the Sovereign Base Area land 60% is privately owned and farmed, 20% is owned by the Ministry of Defense, and 20% is SBA Crown land
netting and trapping of small migrant songbirds in the spring and autumn
temperate; Mediterranean with hot, dry summers and cool winters
Capability-group ratings for Critical Technology are part of the GINC National Capability Framework rather than the country factbook. They are published in the National Capability index, and the per-capability detail lives on the capability pages.
defense is the responsibility of the UK; includes Dhekelia Garrison and Ayios Nikolaos Station connected by a roadway
approximately 15,700 live on the Sovereign Base Areas of Akrotiri and Dhekelia including 7,700 Cypriots, 3,600 service and UK based contract personnel, and 4,400 dependents
presented 3 August 1960, effective 16 August 1960; amended 1966 (The Sovereign Base Areas of Akrotiri and Dhekelia Order in Council 1960, serves as a basic legal document) (2013)
laws applicable to the Cypriot population are, as far as possible, the same as the laws of the Republic of Cyprus; note - the Sovereign Base Area Administration has its own court system to deal with civil and criminal matters
a special form of UK overseas territory; administered by an administrator who is also the Commander, British Forces Cyprus
the flag of the UK is used
English, Greek
British Forces Broadcast Service (BFBS) provides multi-channel satellite TV service as well as BFBS radio broadcasts to the Dhekelia Sovereign Base (2009)
none (overseas territory of the UK)
none (overseas territory of the UK)
none
Economic activity is limited to providing services to the military and their families located in Dhekelia. All food and manufactured goods must be imported.