South Yemen, officially the People's Democratic Republic of Yemen, abbreviated to Democratic Yemen, was a state that existed from 1967 to 1990 as the only communist state in the Middle East and the Arab world. It was made up of the southern and eastern governorates of the present-day Republic of Yemen, including the island of Socotra. It was bordered by North Yemen to the north-west, Saudi Arabia to the north, and Oman to the east.
North Yemen is a term used to describe the Kingdom of Yemen (1918-1962), the Yemen Arab Republic (1962-1990), and the regimes that preceded them and exercised sovereignty over that region of Yemen. Its capital was Sanaa from 1918 to 1948 and again from 1962 to 1990. Located in the southwestern part of the Arabian Peninsula, the area of the region is 195,000 square kilometers, it used to have a population of about thirteen million people prior to the Yemeni unification. It was bordered to the north by Saudi Arabia, to the south and east by South Yemen, to the west by the Red Sea, and to Bab al-Mandab in the southwest.
Ali Salem al-Beidh is a Yemeni politician who served as the General Secretary of the Yemeni Socialist Party (YSP) in South Yemen and as Vice President of Yemen following the unification in 1990. He left the unification government in 1993, sparking the 1994 civil war in Yemen and then went into exile in Oman. He is a leader of the Southern independence movement known as Al Hirak.
Ahmad bin Hussein al-Ghashmi was a Yemeni military officer who served as the fourth President of the Yemen Arab Republic from 11 October 1977 until his assassination eight months later. Al-Ghashmi had assumed power when his predecessor, Ibrahim al-Hamdi, was assassinated.
The 1978 South Lebanon conflict, also known as the First Israeli invasion of Lebanon and codenamed Operation Litani by Israel, began when Israel invaded southern Lebanon up to the Litani River in March 1978. It was in response to the Coastal Road massacre near Tel Aviv by Palestinian militants based in Lebanon. The conflict resulted in the deaths of 1,100–2,000 Lebanese and Palestinians, 20 Israelis, and the internal displacement of 100,000 to 250,000 people in Lebanon. The Israel Defense Forces gained a military victory against the Palestine Liberation Organization (PLO) as the latter was forced to withdraw from southern Lebanon, preventing it from launching attacks on Israel from across its land border with Lebanon. In response to the outbreak of hostilities, the United Nations Security Council adopted Resolution 425 and Resolution 426 on 19 March 1978, which called on Israel to immediately withdraw its troops from Lebanon and established the United Nations Interim Force in Lebanon (UNIFIL).
Ali Nasir Muhammad Al-Husani is a Yemeni former politician and leader of South Yemen who served as General Secretary of the Yemeni Socialist Party between 1980 and 1986. He was twice president of South Yemen and once the Prime Minister. He served as the Prime Minister from 2 August 1971 until 14 February 1985 and as Chairman of the Presidential Council from 26 June 1978, after the ouster and execution of Salim Rubai Ali, until 27 December 1978.
The Yemeni Socialist Party is a democratic socialist political party in Yemen. A successor of Yemen's National Liberation Front, it was the ruling party in South Yemen until Yemeni unification in 1990. Originally Marxist–Leninist, the party has gradually evolved into a social democratic opposition party in today's unified Yemen.
The Yemeni unification took place on 22 May 1990, when the People's Democratic Republic of Yemen was united with the Yemen Arab Republic, forming the Republic of Yemen.
The modern history of Yemen began with the withdrawal of the Ottoman Empire. In 1839 the British set up a protective area around the southern port of Aden and in 1918 the northern Kingdom of Yemen gained independence from the Ottoman Empire. North Yemen became a republic in 1962, but it was not until 1967 that the British Empire withdrew from what became South Yemen. In 1970, the southern government adopted a communist governmental system. The two countries were officially united as the Republic of Yemen on May 22, 1990.
The United Nations Peacekeeping efforts began in 1948. Its first activity was in the Middle East to observe and maintain the ceasefire during the 1948 Arab–Israeli War. Since then, United Nations peacekeepers have taken part in a total of 72 missions around the globe, 12 of which continue today. The peacekeeping force as a whole received the Nobel Peace Prize in 1988.
The Ethiopian–Somali Border War occurred from June 1982 to August 1983 when Ethiopia, sending a 10,000-man invasion force backed by warplanes and armoured units, supported by thousands of Somali Salvation Democratic Front (SSDF) rebels, invaded central Somalia.
The Imams of Yemen, later also titled the Kings of Yemen, were religiously consecrated leaders (imams) belonging to the Zaidi branch of Shia Islam. They established a blend of religious and temporal-political rule in parts of Yemen from 897. Their imamate endured under varying circumstances until the end of the North Yemen civil war in 1970, following the republican revolution in 1962. Zaidi theology differs from Isma'ilism and Twelver Shi'ism by stressing the presence of an active and visible imam as leader. The imam was expected to be knowledgeable in religious scholarship, and to prove himself a worthy headman of the community, even in battle if this was necessary. A claimant of the imamate would proclaim a "call" (dawah), and there were not infrequently more than one claimant.
The Arab Cold War was a political rivalry in the Arab world from the early 1950s to the late 1970s and a part of the wider Cold War. It is generally accepted that the beginning of the Arab Cold War is marked by the Egyptian Revolution of 1952, which led to Gamal Abdel Nasser becoming president of Egypt in 1956. Thereafter, newly formed Arab republics, inspired by revolutionary secular nationalism and Nasser's Egypt, engaged in political rivalries with conservative traditionalist Arab monarchies, influenced by Saudi Arabia. The Iranian Revolution of 1979, and the ascension of Ayatollah Ruhollah Khomeini as leader of Iran, is widely seen as the end of this period of internal conflicts and rivalry. A new era of Arab-Iranian tensions followed, overshadowing the bitterness of intra-Arab strife.
The National Liberation Front was a Marxist–Leninist paramilitary organization and a political party operating in the Federation of South Arabia, during the Aden Emergency. During the North Yemen Civil War, fighting spilled over into South Yemen as the British attempted to establish an autonomous colony known as the Federation of South Arabia. Following the exit of the British armed forces, the NLF seized power from its rival, the Arab nationalist Front for the Liberation of Occupied South Yemen (FLOSY) (FLOSY). In the aftermath of the Emergency, the NLF renamed itself the National Front and eventually became the main force behind the creation of the Yemeni Socialist Party, which subsequently governed the country as a single-party Marxist–Leninist state.
Israel and Yemen do not have diplomatic relations. Holders of an Israeli passport or any passport with an Israeli stamp are barred entry to Yemen and Yemen is defined as an "enemy state" under Israeli law.
Oman–Yemen relations refer to bilateral relations between the southern Peninsular Arab nations of Oman and Yemen. The two countries share a 294 km border. Both Oman and Yemen were part of the Persian Empire, and later the Umayyad and Abbasid caliphates. Yemen has an embassy in Muscat. Oman has an embassy in Sana'a. Both countries are members of the Arab League and Organisation of Islamic Cooperation.
The South Yemen civil war, colloquially referred to in Yemen as the events of '86, the events of January 13, or simply as the events, was a failed coup d'etat and brief civil war which took place on January 13, 1986, in South Yemen. The civil war developed as a result of ideological differences, and later tribal tensions, between two factions of the ruling Yemeni Socialist Party (YSP), centred on Abdul Fattah Ismail's faction, at-Toghmah, and Ali Nasir Muhammad's faction, az-Zomrah, for the leadership of the YSP and South Yemen. The conflict quickly escalated into a costly civil war that lasted eleven days and resulted in thousands of casualties. Additionally, the conflict resulted in the demise of much of the Yemeni Socialist Party's most experienced socialist leadership cadre, contributing to a much weaker government and the country's eventual unification with North Yemen in 1990.
Russia and Yemen enjoy both warm and friendly relations that goes back to more than a century. Russia has supported both the Yemen Arab Republic and the People's Democratic Republic of Yemen on several occasions and established close relations with them. After Yemeni unification, both countries maintain close ties.
The Second Yemenite War was a short military conflict between the Yemen Arab Republic and the People's Democratic Republic of Yemen. The war developed out of a breakdown in relations between the two countries after the president of North Yemen, Ahmad al-Ghashmi, was killed on 24 June 1978, and Salim Rubai Ali, a Maoist who had been working on a proposed merger between the two Yemens, was murdered two days later. The hostility of the rhetoric from the new leadership of both countries escalated, leading to small-scale border fighting, which then in turn escalated into a full-blown war in February 1979.
The First Yemenite War was a short military conflict between the Yemen Arab Republic and the People's Democratic Republic of Yemen.
North Yemen 
Islamic Front 
Republic of China 
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Libya 