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The flag of Libya was originally introduced in 1951, following the creation of the Kingdom of Libya. The flag, consisting of the Pan Arab colours, was designed by Omar Faiek Shennib and approved by King Idris Al Senussi who comprised the UN delegation representing the three regions of Cyrenaica, Fezzan, and Tripolitania at UN unification discussions. The flag fell out of use in 1969, but was subsequently adopted by the National Transitional Council and anti-Gaddafi forces and effectively reinstated as the country's national flag in article three of the Libyan Draft Constitutional Charter for the Transitional Stage issued on 3 August 2011.

Source: Wikipedia