The party was founded on 5 January 1949, and registered on 17 March the same year, under notification N°789. The founders comprised six individuals, all of different backgrounds. The most notable of these was Kamal Jumblatt. The others were Farid Jubran, Albert Adeeb, Abdallah Alayli, Fouad Rizk, and George Hanna. The PSP held in Beirut the first conference for the Socialist Arab Parties in Lebanon, Syria, Egypt and Iraq in 1951. From 1951 through 1972 the party had between 9 and 23 deputies in parliament.
Under Kamal Jumblatt's leadership, the PSP was a major element in the Lebanese National Movement which supported Lebanon's Arab identity and sympathised with the Palestinians. Despite Jumblatt's initial reluctance to engage in paramilitarism, it built its own powerful military wing, the People's Liberation Army which proved to be one of the strongest private armies in the Lebanese Civil War of 1975 to 1990. It conquered much of Mount Lebanon and the Chouf District. Its main adversaries were the Kataeb Regulatory Forces militia, and later the Lebanese Forces militia. The PSP suffered a major setback in 1977, when Kamal Jumblatt was assassinated. His son Walid succeeded him as leader of the party. From the Israeli withdrawal from the Chouf in 1983 to the end of the civil war, the PSP ran a highly effective civil administration, the Civil Administration of the Mountain, in the area under its control. Tolls levied at PSP/PLA militia checkpoints provided a major source of income for the administration, which succeeded in providing a high standard of social and public services. The PSP played an important role in the so-called Mountain War under the lead of Walid Jumblatt: after the Israel Defense Forces retreated from the Chouf District, important battles took place there between the PSP/PLA and the Lebanese Forces militia. Both the Lebanese Forces and the PSP/PLA were accused of committing massacres and atrocities against one another as tit-for-tat. This was a sad hallmark of the Lebanese Civil War because the innocent people were the ones who paid the highest price.
The post-war years
Since the restoration of constitutional rule in 1989 PSP was the major ally of Syria in Lebanon and its leader Walid Jumblatt was in close relations with the Syrian Army and intelligence generals in Lebanon, namely Ghazi Kanaan and also with the Syrian Vice PresidentAbdul Halim Khaddam. PSP participated in a number of governments, but, after the Syria Accountability Act and the UN Resolution 1559 and the change of the balance of powers in the region after the occupation of Iraq, joined the opposition and took up a position opposed to the role of Syria in Lebanon's politics. Unlike some opponents of the Syrian presence, he did not oppose the presence of the Syrian army per se, but contended that the Syrian intelligence services were exerting undue influence. Following the passage of United Nations Security Council Resolution 1559, calling for a Syrian withdrawal from Lebanon, Jumblatt was particularly prominent in the opposition. However, he was opposed to the demand that Hezbollah be disarmed, and insisted on maintaining relations with the ShiaIslamist party. Later, he has drifted into sharp opposition towards the group, and has decided to support their disarmament, claiming that Syria and Iran are trying to take over Lebanon through Hezbollah. After the assassination of Rafic Hariri in February 2005, Jumblatt joined the anti-Syria camp despite his long support to Syria. Being part of the March 14 Alliance, the PSP won 16 seats in the general elections held in 2005. Marwan Hamade called for dismantling of the communications system of Hezbollah on 5 May 2008, which created a huge response from Hezbollah and its allies. Clashes took place on 7 May 2008, as Hezbollah occupied Beirut. The conflict ended after Meer Talal Ereslan interfered and put an end for the fights. In late January 2011, Jumblatt declared that he does not support the disarming of Hezbollah. Currently PSP, Hezbollah and several other Lebanese political parties share a "national unity government" in Lebanon. With the onset of the Syrian civil war, Jumblatt and the PSP clearly showed their support for the Syrian opposition, and urged the Syrian Druze community to stand against the Assad government, and join the rebels.
