The Free Lebanon State (Arabic: دولة لبنان الحر‎‎ Dawlat Lubnān al-Ḥurr) was a de facto unrecognized state, announced by Saad Haddad, Lebanese politician and commander of the Maronite-Christian dominated South Lebanon Army on the course of the Lebanese Civil War. The announcement was made on 18 April 1979, exercising authority in parts of Southern Lebanon. The state failed to gain international recognition and its authority deteriorated with the death of Saad Haddad in 1984.

The announcement was made on 18 April 1979. The following day, he was branded a traitor to the Lebanese government and officially dismissed from the Lebanese Army.

With the Free Lebanon State existence relying on Israeli logistic and since 1982 also military support, effectively making it a client-state of Israel according to some opinions. The Free Lebanon State functioned for several years as a semi-independent authority in South Lebanon, being in a complete political disconnection with the internationally recognized Lebanese government in Beirut. The government of Free Lebanon under Haddad's leadership had never received international recognition. Following the 1982 Lebanon War, much of the claimed territory of the Free Lebanon State became part of the South Lebanon Security Belt, under joint control of the Israeli Army and the Free Lebanon Army. The authority of the Free Lebanon State further deteriorated with the death of Saad Haddad on January 1984, following which only the military force of the self-proclaimed state continued to function, rebranded as the South Lebanon Army (SLA).

During the South Lebanon conflict (1982–2000), Saad Haddad headed the Christian radio station "Voice of Hope", initially set up and funded by George Otis of High Adventure Ministries. The Voice of Hope was set up as a charitable endeavor to help the Christian enclave in Southern Lebanon, but it quickly became politicized, when Hadaad used it for political diatribes aimed at his many enemies. High Adventure billed it as the only privately owned radio station in the Middle East that was broadcasting the Gospel, but its message was often tainted by the necessary affiliation with Hadaad's militia, as its operation depended upon his protection and authority, resulting in a very curious blend of scripture lessons and political commentary which the staff at the station could not control or regulate.

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