🇾🇪 Yemen

Large settlements existed in the mountains of northern Yemen from around 5000 BC. This early sedentary agriculture underpinned the later South Arabian kingdoms and Yemen's role at the crossroads of trade between eastern and western civilisations.

Saba, the most prominent of the South Arabian federations and thought to be the biblical Sheba, constructed the Great Dam of Marib around 940 BC. The dam allowed intensive irrigated agriculture in an arid land and became the emblem of Sabaean hydraulic and administrative capability.

By the third century BC the kingdoms of Qataban, Hadhramaut and Ma'in had broken away from Sabaean overlordship. Ma'in stretched as far as Dedan with its capital at Baraqish, fragmenting political authority across South Arabia.

Following the collapse of Qataban in 50 BC, the Sabaeans re-established control over Ma'in and recovered their primacy in South Arabia. The revival concentrated control of the incense and trade routes once more in Sabaean hands.

Around AD 100 the Himyarites took Sanaa from the Hamdan confederation, marking their rise against a background of rival claims to the title King of Sheba and Dhu Raydan. Hashdi tribesmen rebelled and recovered the city around 180, showing how contested highland authority remained.

By 275 Shammar Yahri'sh had conquered Hadhramaut, Najran and Tihamah, consolidating Himyarite rule over most of present-day Yemen. The Himyarites rejected polytheism in favour of monotheistic Rahmanism, and the kingdom shaped the territorial idea of Yemen for centuries.

By 515 Himyar was increasingly divided between Jewish, Christian and other factions, and civil turmoil brought intervention from Aksum across the Red Sea. The last Himyarite king Ma'adikarib Ya'fur, a Christian, was installed with Aksumite support against his Jewish rivals.

After the death of Ma'adikarib Ya'fur around 521, the Jewish warlord Dhu Nuwas rose to power in Himyar. The episode drew in the great powers, with Emperor Justinian I pressing the Himyarites to attack Persia while Rome worked to convert and influence Aksum.

When Abraha died around 570 the Sassanid Persians annexed Yemen, though all of it except Aden and Sanaa retained substantial autonomy. The annexation ended ancient South Arabian civilisation, leaving the country fractured among clans until the coming of Islam.

Around 630 Muhammad dispatched his cousin Ali to Sanaa and Muadh ibn Jabal to Al-Janad, and wrote to tribal leaders; major tribes including Himyar sent delegations to Medina in the 'year of delegations' of about 630–631. The Banu Hamdan were among the first converts, Christians and Jews of Najran agreed to pay jizyah, and Yemeni tribes went on to play a pivotal role in Islamic expansion.

Around 818 the Ziyadid dynasty was established in Tihamah, ruling from Zabid over a coastal state stretching from Haly to Aden while nominally recognising the Abbasid Caliphate. It traded with Abyssinia in slaves, amber and leopard hides but never controlled the highlands or Hadhramaut, where Yufirids and Ibadis held sway.

Invited from Medina to Saada in 893 to arbitrate tribal disputes, the cleric Yahya ibn al-Husayn won over local tribesmen and founded the Zaidi imamate in 897, extending influence over Saada and Najran. The tribes of Hashid and Bakil, later called the twin wings of the imamate, accepted his authority, establishing a religious-political order that endured in the highlands for over a millennium; his attempt to take Sanaa from the Yufirids in 901 failed.

The Sulayhid dynasty was founded in the northern highlands around 1040 amid a patchwork of local dynasties. Ali conquered Zabid in 1060, killing the Najahid founder Al-Najah, and by 1063 had subjugated Greater Yemen before marching on the Hejaz and occupying Makkah; his wife Asma bint Shihab governed alongside him.

After Ali al-Sulayhi's killing in 1084 and her injured husband Al-Mukarram's retirement in 1087, Queen Arwa ruled Yemen until her death in 1138, transferring the Sulayhid seat from Sanaa to Jibla. She dispatched Ismaili missionaries to India, founding a community that survives today, and is remembered in Yemeni lore as Balqis al-sughra.

Hadhramaut fell into Sulayhid hands after their capture of Aden in 1162. Control of the port tied the interior to Indian Ocean commerce, though after Arwa's death the country had already begun splitting among competing petty dynasties.

Saladin dispatched his brother Turan Shah, who took Zabid from the Mahdids in 1174 and captured Aden from the Zurayids in June of that year. The Hamdanid sultans of Sanaa resisted from 1175 and the Ayyubids only secured the city in 1189; their rule eliminated the ministates of southern and central Yemen but never broke the Zaydi north.

Zaydis of Shibam Kawkaban rebelled in 1191, killing 700 Ayyubid soldiers, and in 1197 Abdullah bin Hamza proclaimed the imamate against Sultan al-Mu'izz Ismail, who was assassinated in 1202. Abdullah conquered Sanaa and Dhamar in 1198 and fought on until his death in 1217, after which the Zaydi community split between rival imams and signed a truce in 1219.

The Ayyubid army was beaten at Dhamar in 1226, and Sultan Mas'ud Yusuf departed for Mecca in 1228 never to return, though some sources say he left for Egypt in 1223. The withdrawal opened the way for an independent Yemeni sultanate.

Appointed deputy governor by the Ayyubids in 1223, Umar stayed as caretaker when the last Ayyubid ruler left in 1229 and declared himself independent king as al-Malik Al-Mansur. He established himself at Zabid, took Sanaa, and made Zabid and Taiz his capitals; assassinated by his nephew in 1249, he was succeeded by his son Yusuf al-Muzaffar.

After Baghdad fell to the Mongols in 1258 the Rasulid sultan appropriated the caliphal title and chose Taiz as political capital for its strategic position near Aden. Rasulid madrasas entrenched the Shafi'i school, and Taiz and Zabid became international centres of Islamic learning under scholarly kings, even as war of attrition with the Zaydi imams continued.

The weakening of Rasulid rule amid succession disputes and tribal revolts allowed the Tahirids of Rada'a to establish themselves as rulers of Yemen in 1454. They built schools, mosques, bridges, irrigation channels and cisterns, notably the Amiriya Madrasa of 1504, but were too weak to contain the Zaydi imams or resist foreign attack.

In 1513 the Portuguese occupied the island of Socotra and mounted an unsuccessful attack on Aden, dominating the port for a period and holding a fortified enclave on Socotra. Portuguese sea power threatened Indian Ocean and Red Sea trade, prompting Mamluk and later Ottoman intervention in Yemen.

After the Mamluk sultan came to Zabid in 1515 seeking funds from the Tahirids for a jihad against the Portuguese, a Mamluk army supported by Zaydi Imam Al-Mutawakkil Yahya Sharaf ad-Din overran the Tahirid realm in 1517 but could not capture Aden. The victory was short-lived, as the Ottomans conquered Egypt and hanged the last Mamluk sultan in Cairo.

The Ottoman governor of Egypt stormed Aden in 1538 and extended Ottoman authority to Zabid in 1539, making it the administrative headquarters of Yemen Eyalet and eventually taking all of Tihamah. The Ottomans sought to protect Mecca and Medina and the India trade route from the Portuguese, but never controlled the highlands, where Zaydi resistance made national heroes of the tribes.

Under the Qasimi imams Yemen held a world monopoly on coffee and established diplomatic relations with Safavid Persia, the Ottomans of the Hejaz, Mughal India and Ethiopia. The trade gave the imamate wealth and international standing before the monopoly was broken.

In 1632 the Zaydi imam sent 1,000 men who entered Mecca in triumph and killed its governor, before an Ottoman army from Egypt cut them off from their wells, inflicting over 200 casualties mostly from thirst. The survivors surrendered and returned; after the imam's death in 1644 his successor Al-Mutawakkil Isma'il conquered the whole of Yemen.

In the first half of the eighteenth century Europeans smuggled coffee trees out of Yemen and cultivated them in the East Indies, East Africa, the West Indies and Latin America. The loss of the monopoly, together with the imamate's lack of a cohesive succession mechanism and tribal insubordination, drove the political decline of the Qasimi dynasty.

Needing a coal depot for steamers to India, East India Company officials chose Aden; the British evicted the Sultan of Lahej and forced him to accept their protection. The January 1839 capture gave Britain a strategic coaling station on the route to India, and in November some 5,000 tribesmen tried to retake the town but were repulsed with 200 killed. Aden remained under British control for the next 128 years and became the nucleus of what later developed into South Yemen, beginning more than a century of British rule in southern Yemen.

Alarmed by British expansion from India into the Red Sea and Arabia, the Ottomans came back to Tihamah in 1849, invited in part by citizens of Sanaa weary of disorder among the Zaydi imams. The move set up decades of Anglo-Ottoman rivalry over Yemen.

With emigrants arriving from India, East Africa and Southeast Asia, Aden became a world city; in 1850 only 980 Arabs were registered as original inhabitants. Its growth as a free port made the population largely foreign until Yemeni labour migration reversed the balance.

The canal's opening in 1869 raised the strategic value of the Red Sea littoral and confirmed the Ottoman decision to stay in Yemen. It also increased the importance of British-held Aden on the route to India.

By 1873 Ottoman forces had subdued the northern highlands and Sanaa became the administrative capital of Yemen Vilayet. The Ottomans disempowered local lords, co-opted rebellious chiefs into administrative posts and introduced economic reforms, but corruption and the Tanzimat's unpopularity among Zaydi tribes limited their hold.

In 1876 the Hashid and Bakil confederations rose against the Ottomans, who ended the uprising only by distributing gifts. The revolt showed the fragility of imperial authority in the highlands and the cost of the Tanzimat reforms, seen as heretical by Zaydi tribes.

The volcanic island of Jabal al-Tair erupted in 1883 and again in 2007. Many of Yemen's Red Sea islands are volcanic in origin.

From 1890 hundreds of Yemenis from Hajz, Al-Baetha and Taiz moved to Aden to work in the ports and as labourers. This restored an Arab majority to a city that had become largely foreign after its declaration as a free zone.

Most of Yemen's ancient Jewish community left for Israel in the mid-twentieth century through Operation Magic Carpet and the wider exodus from Arab and Muslim countries. Around 200 more were brought out by the Jewish Agency about 2016; a 2020 estimate counted as few as 26 remaining, and a 2022 UN report just one.

From 1904 Imam Yahya's rebels disrupted the Ottoman ability to govern, and the revolts of 1904 to 1911 cost the empire as many as 10,000 soldiers and up to 500,000 pounds a year. Ahmed Izzet Pasha proposed abandoning the highlands altogether, an admission of imperial overstretch.

A treaty signed in 1911 acknowledged Imam Yahya as autonomous leader of the northern highlands while the Ottomans continued to govern Shafi'i areas of the mid-south until their departure in 1918. The settlement created the effective basis of an independent Zaydi state in northern Yemen.

Following the Anglo-Ottoman Convention of 1913, in 1914 the two empires split Arabia into an Ottoman northwest and a British southeast, with a further boundary agreement later known as the Violet Line. The partition prefigured the long division of Yemen between north and south.

The Mutawakkilite Kingdom of Yemen emerged under Imam Yahya Muhammad Hamid ed-Din following the Ottoman defeat in the First World War. The imamate ruled North Yemen in isolation from much of the outside world until the 1962 revolution.

Ruling the northern highlands independently from 1911, Yahya launched a conquest of the wider Yemeni lands and took the Red Sea port of al-Hudaydah in 1925. In 1927 his forces came within 50 km of Aden, Taiz and Ibb before five days of British bombing forced them back.

Italy's recognition in 1926 alarmed Britain, which read it as endorsement of Yahya's claim to Greater Yemen including the Aden protectorate and Asir. The dispute over these claims drove the imam's confrontations with both Britain and Ibn Saud.

After the 1934 war Ibn Saud declared a ceasefire in May, and Yahya released Saudi hostages, surrendered the Idrisis to Saudi custody and ceded the three provinces for twenty years. Fearing for Hudaydah he submitted, and in the same year signed a treaty recognising British sovereignty over the Aden protectorate for forty years.

Wartime traffic gave Aden rapid economic growth, ranking it behind only New York City in shipping activity. The resulting labour force and trade unions became the seedbed of anti-colonial politics.

Radio broadcasting started in Yemen in the 1940s, and after unification in 1990 the government reformed its corporations and founded additional local stations. Expansion was reversed after 1994 because of infrastructure destroyed in the civil war.

After the rise of labour unions a rift opened between sectors of workers and the first organised resistance to the occupation appeared in 1943. Muhammad Ali Luqman founded the first Arabic club and school in Aden and pioneered union organising.

From 4.3 million in 1950 the population reached 33 million by 2021 estimates, with 46 per cent under 15 and only 2.7 per cent over 65, and is projected to approach 60 million by 2050. Sanaa alone grew from roughly 55,000 in 1978 to nearly a million by the early twenty-first century.

Slavery was formally abolished in Yemen in 1962, though the practice has persisted. The measure accompanied the republican break with the Mutawakkilite monarchy's social order.

On the death of Imam Ahmad bin Yahya in 1962, republican army officers deposed his newly enthroned successor, Imam Muhammad al-Badr, in a September coup and declared a republic. This ignited a civil war in which Hamidaddin royalists were backed by Saudi Arabia, Britain, Jordan and covertly Israel, while Egypt sent a large expeditionary force for the republicans. After years of fighting the republicans established the Yemen Arab Republic; the war lasted until 1970.

With most support for the National Liberation Front coming from Radfan and Yafa, the British launched Operation Nutcracker in January 1964, which completely burned Radfan. The NLF, led by Qahtan Muhammad Al-Shaabi, aimed to destroy the sultanates and unite with the Yemen Arab Republic.

The Aden Emergency ended British rule and on 30 November 1967 the state of South Yemen was formed from Aden and the former Protectorate of South Arabia. Later officially the People's Democratic Republic of Yemen, it became the Middle East's only communist state and began a programme of nationalisation, backed by the Eastern Bloc.

Three years after independence, South Yemen turned Marxist. The massive exodus of hundreds of thousands of Yemenis from the south to the north contributed to two decades of hostility between the states.

In 1972 North and South Yemen went to war, settled by a ceasefire and negotiations brokered by the Arab League which declared that unification would eventually occur. Fighting resumed in 1979 alongside renewed unification efforts.

Saleh took power in July after his two predecessors were assassinated within the space of a year. He went on to lead unified Yemen after 1990, ruling for a total of 33 years until 2012.

Republican decree no. 48 of 1981, together with prison regulations, provides the legal framework for the country's prison system. Human rights groups revealed in June 2020 the scale of torture and deaths in unofficial detention centres outside that framework.

The 11 June blast at the military base was not immediately attributed to a specific cause. The Southern Giants Brigades are a UAE-backed force that has played a significant role in the fighting around Aden.

The 14 May agreement was mediated as part of ongoing UN-backed efforts to build confidence between the warring parties. It followed a larger exchange of 2,900 detainees the previous December.

The 17 May ruling, issued in Sanaa, was part of a pattern of similar prosecutions by Houthi courts against alleged informants and coalition collaborators. Rights groups have criticised the proceedings as lacking due process.

The 10 January announcement followed a Saudi-backed military operation launched days earlier to recapture Hadhramaut Governorate from the UAE-backed STC. The confrontation exposed deep rifts within the anti-Houthi coalition that had fought together earlier in the civil war.

The 15 January appointment followed the resignation of the previous prime minister, Ahmad Awad bin Mubarak, in May 2025 over an inability to carry out reforms. Zindani's government faced the immediate task of managing the aftermath of the southern crisis with the STC.

The 29 January withdrawal followed sustained harassment of aid workers by Houthi authorities, who separately seized equipment and vehicles from UN offices in Sanaa the same week. The move cut off a major source of food aid in areas home to millions of Yemenis.

After the Southern Transitional Council mounted an initially successful military campaign in late 2025, a government counter-offensive routed it in early 2026. The outcome reasserted the internationally recognised government's position in the south.

The 8 December operation, named Promising Future, marked a major escalation between the UAE-backed STC and the internationally recognised, Saudi-backed government. The takeover proved short-lived, reversed within weeks by a Saudi-backed counteroffensive.

The 23 December agreement was mediated by the UN special envoy's office and the International Committee of the Red Cross. It followed years of smaller, incremental prisoner releases between the two sides.

Yemen's internationally recognised government blamed the Houthis for the 7 September damage; the group denied involvement. The Red Sea carries a large share of the cables connecting Europe and Asia, making it a point of vulnerability for global internet traffic.

The 10 September strikes came a day after Israeli strikes on Hamas officials in Doha, Qatar. Israel had carried out repeated attacks on Yemen through 2025 in response to Houthi missile and drone fire linked to the Gaza war.

In June 2024 the UAE-backed STC pushed a lease of the port to Abu Dhabi Ports, opposed by parliament, the public and 24 members of the Shura Council, who rejected it categorically. Economists and the governor of Aden argued the aim was to devalue the port and strip its international maritime status in favour of Emirati harbours; Aden had ended its container terminal agreement with Dubai Ports World in 2012.

President Joe Biden announced in January 2024 that the US, Britain, Australia, Bahrain, Canada and the Netherlands had assaulted Houthi militant targets. The strikes answered Houthi missile attacks on Israel and shipping in the Red Sea launched after the outbreak of the Gaza war in solidarity with the Palestinians.

As of 2024 Yemen had still not ratified the climate accord, one of only three countries in that position. The omission costs it international climate support at a time of acute water scarcity.

Having lost the support of the Saudi-led coalition, President Hadi resigned and the Presidential Leadership Council assumed authority in April 2022. Since then the internationally recognised PLC and the Houthi-led Supreme Political Council have divided the country and its armed forces.

In March 2020 the United States, Saudi Arabia and the United Arab Emirates withdrew tens of millions of dollars from health care programmes and other aid within the UN's Yemen appeal. Human Rights Watch later demanded an end to interference with aid operations in September 2020 as millions of lives were at risk.

In 2019 the UN found about 24 million Yemenis, nearly 75 per cent of the population, in need of humanitarian aid. It was the largest such caseload in the world, a measure of state collapse after five years of war.

The UAE-backed separatist council took control of Aden in February 2018, after jihadist groups had become active in the city following its recapture from the Houthis, including the Missionaries of Charity attack of 4 March 2016. Southern separatism became a third pole in the conflict alongside the government and the Houthis.

The deposed president, accused of treason, was killed on 4 December 2017 while attempting to escape clashes between Houthi and pro-Saleh forces near rebel-held Sanaa. His death ended the alliance of convenience between the Houthis and his faction of the armed forces.

In 2017 the Council voted to establish experts to examine suspected breaches of humanitarian law and human rights. The Guardian revealed in December 2021 that Saudi Arabia had used incentives and threats to bring the inquiry to an end.

Famine has gripped Yemen since 2016 as a consequence of the war, with more than 50,000 children dying of starvation in 2017 and a cholera outbreak affecting over a million people. The Saudi-led blockade contributed to both, and commentators have condemned the campaign as genocide; the UN estimated over 377,000 war deaths by the end of 2021, roughly 70 per cent of them children under five.

On 26 March 2015 Saudi Arabia began airstrikes and assembled a coalition including the UAE, Kuwait, Qatar, Bahrain, Jordan, Morocco, Sudan, Egypt and Pakistan, claiming the Houthis were aided by Iran, with the United States providing intelligence, targeting and logistics. The intervention and accompanying blockade internationalised the civil war and devastated the Yemeni economy.

Hadi escaped Sanaa on 21 February 2015, rescinded his resignation, condemned the coup and demanded recognition as constitutional president, naming Aden the temporary capital the following month. When the Houthis rejected a Gulf Cooperation Council initiative and advanced south, all US personnel were evacuated and Hadi fled to Saudi Arabia.

Anti-government forces led by Abdul-Malik al-Houthi took the capital in September 2014, forcing President Abdrabbuh Mansour Hadi to accept a unity government which they then refused to join, shelling his residence and placing him under house arrest until the government resigned en masse in January 2015; his government eventually fled to Saudi Arabia. In February 2015 the Houthis dissolved parliament and installed a Revolutionary Committee under Mohammed Ali al-Houthi, whose constitutional declaration of 6 February 2015 was rejected by opposition politicians, foreign governments and the United Nations, and a Saudi-led coalition intervened militarily in March 2015 to try to restore the government, beginning a conflict that has continued in various forms for over a decade.

Following the start of the civil war in 2014 GDP fell by more than 50 per cent, driven by the Saudi-led blockade and an effective Houthi embargo on oil exports. Yemen, already the poorest country in the Middle East since unification, had recorded GDP (PPP) of US$61.63 billion and income per head of $2,500 in 2013.

In 2014 the panel decided on four regions in the north, two in the south and Sanaa outside any region, creating a federalist model of governance. The scheme was among the disputes that fed the Houthi rejection of the transition.

In December 2013 Socotra Island, previously part of Hadramaut Governorate, was made a governorate in its own right. The change reflected the island's distinct character, including its 57,000 Soqotri speakers.

In accordance with the GCC initiative, the National Dialogue began in March 2013 to discuss key constitutional, political and social issues, and President Hadi concluded it in January 2014. Subsequent steps in the transition include constitutional drafting, a constitutional referendum and national elections.

Hadi won an uncontested vote in February 2012 for a two-year term, heading a unity government including an opposition prime minister and charged with overseeing a new constitution before elections in 2014. A small contingent of US special-operations troops and CIA presence accompanied the campaign against AQAP, and government forces pushed Ansar al-Sharia out of Shabwah Governorate.

In Sanaa the water table stood 30 metres below the surface in the 1970s but had fallen to 1,200 metres by 2012, and in 2009 The Times suggested Yemen could become the first nation to run out of water. The average Yemeni has access to only 140 cubic metres a year against a regional average of 1,000 and a water-stress threshold of 1,700, while war since 2015 has delayed the infrastructure needed to improve supply.

The Arab Spring uprising began in early 2011 with months of demonstrations and violent crackdowns. Saleh flew to Riyadh on 23 November 2011 to sign the Gulf Co-operation Council transition plan he had previously spurned, agreeing to transfer the presidency legally to Vice President Abdrabbuh Mansur Hadi, and formally left office in February 2012 after 33 years in power; on his return that month parliament granted him full immunity from prosecution despite mass protests.

The Yemeni human rights activist was awarded the Nobel Peace Prize in October 2011, as the UN Security Council condemned the violence and called for a transfer of power. The award gave international prominence to Yemen's civic opposition.

In late April 2011 the GCC proposed an agreement under which the president would step down in exchange for immunity from prosecution. Salih's refusal to sign led to heavy street fighting and to his injury in an explosion in June 2011.

Public rallies in Sana'a, inspired by demonstrations in Tunisia and Egypt, built momentum from late January 2011, fuelled by high unemployment, poor economic conditions, corruption and constitutional changes that would let Saleh's son inherit the presidency. Some protests turned violent and spread to other major cities; in March police snipers killed more than 50 people at a pro-democracy camp in Sanaa and the opposition unified behind calls for Salih's immediate ouster as prominent military and tribal leaders defected, while in May dozens died in clashes between troops and tribal fighters, eroding Saleh's international support.

A wave of bombings struck police, official, diplomatic, foreign business and tourism targets in 2008, and an opposition rally in Sanaa demanding electoral reform was met with police gunfire. The attacks damaged Yemen's security reputation and its tourism economy.

A popular socioeconomic protest movement initiated in 2007 took on political goals in 2008, including secession of the south.

In September 2007 Yemen announced the return of conscription. Even before 2014 Yemen fielded the second largest military force on the Arabian Peninsula after Saudi Arabia, with some 66,700 army, 7,000 navy and 5,000 air force personnel estimated in 2012.

Yemen recorded 124,600 refugees and asylum seekers in 2007, and more than 334,000 Yemenis have since been internally displaced by conflict. The country is both a destination and a source of forced migration in the Horn of Africa corridor.

Saleh defeated Faisal bin Shamlan, who took 22%, in the 2006 presidential election and was sworn in for another term on 27 September. Defence spending that year absorbed roughly 40 per cent of the government budget as internal threats mounted.

At least 36 people died in confrontations between police and demonstrators across Yemen in 2005 over increased fuel prices. Subsequent food price rises pushed a further six percent of the population into poverty in 2008 and triggered riots in poorer cities.

In June 2004 the Zaydi cleric Hussein Badreddin al-Houthi began an uprising against the government, which accused the movement of seeking to overthrow it and impose Shia law while the rebels claimed to be resisting persecution and state aggression. The fighting between the government and the Huthis, a Zaydi Shia minority, produced six rounds of combat, the last ending in early 2010 with a cease-fire, and the insurgency became the central fault line of Yemeni politics for the following two decades.

Saudi Arabia constructed a barrier in 2004, claiming that pro-Al Qaeda militants, drugs and weapons were entering the kingdom from Yemen. The fortification underlined Yemen's designation as a security problem by its wealthier neighbour.

Parliamentary elections in April 2003 returned the ruling GPC with an absolute majority. Institutional politics remained a facade over a de facto power-sharing settlement among Saleh, general Ali Mohsen al-Ahmar and the al-Islah figurehead Abdullah ibn Husayn al-Ahmar.

In 2003 Yemen set out to school 95 per cent of six to 14-year-olds and narrow the gender gap in education. The World Bank approved a seven-year project in March 2008 to improve gender equity and secondary schooling for rural girls, and education spending rose from 5 per cent of GDP in 1995 to 10 per cent in 2005, with adult literacy at 64 per cent in 2010.

Violence surrounded a 2001 referendum that apparently endorsed extending President Saleh's term and powers. The vote entrenched executive dominance within the constitutional framework of 1991.

In the summer of 2000 Yemen and Saudi Arabia signed the Treaty of Jeddah, an international border treaty settling the long-disputed frontier and resolving a fifty-year-old dispute over its location. It formed part of tangible diplomatic progress in restoring normal relations with Yemen's neighbours after the 1994 civil war.

The October suicide attack, using a small boat laden with explosives, killed 17 US sailors and nearly sank the destroyer. It was among the deadliest attacks on a US Navy vessel and drew international attention to al-Qaeda's presence in Yemen.

Saleh won the 1999 presidential election with 96% of the vote against Najeeb Qahtan Al-Sha'abi, a GPC member running as an independent. The contest formalised his authority in reunified Yemen, which he had led since 1990.

An accord was signed in Amman on 20 February 1994 after negotiations over the political deadlock dragged on, but it could not stop war between the never-integrated northern and southern armies. The 1994 civil war destroyed infrastructure, including broadcasting, and confirmed northern dominance of the unified state.

Southern leaders declared independence in May, citing unequal treatment since unification, but northern forces defeated the secessionists within two months. The war entrenched northern political dominance and left lasting southern grievances.

In the 1993 election, the first since unification, the GPC took 122 of 301 seats, and a coalition government of the ruling parties of both former states was formed after food riots in major towns in 1992. Vice President al-Beidh nonetheless withdrew to Aden in August 1993, citing violence against the Yemeni Socialist Party and southern economic marginalisation.

The 1991 constitution created an elected president, an elected 301-seat Assembly of Representatives and an appointed 111-member Shura Council, with presidential candidates requiring endorsement by at least 15 members of parliament. It provided the legal framework of the unified republic.

The two governments reached full agreement on joint governance and merged on 22 May 1990, combining the Yemen Arab Republic and the Marxist People's Democratic Republic of Yemen, with Ali Abdullah Saleh as president and southern leader Ali Salem al-Beidh as vice president. A unified parliament was formed and a unity constitution agreed, creating the modern Yemeni state, but tensions between the two former states persisted and contributed to a civil war four years later.

As a Security Council member for 1990 and 1991 Yemen abstained on several resolutions on Iraq and Kuwait and voted against authorising force, its president opposing intervention by non-Arab states. The stance outraged the United States, and Saudi Arabia expelled 800,000 Yemenis in 1990 and 1991 in retaliation, a devastating blow to remittance income.

Thousands were killed in factional fighting in 1986; President Ali Nasser Muhammad fled north and was sentenced to death for treason, and a new government was formed. The bloodletting weakened the southern state ahead of unification.