1945.
in 1980
Libya join United Nation on 14 December 1955.
2594 CE
In 1994 Brunei became the 139th county to join UN after its Independance from British Colonial Rule.
December 9, 1966
In 1962
*Rwanda
Libya joined the Arab League because it is an Arab country.
Libya no longer has a military government so they can at least apply for membership of UN.
The intervention in Libya is actually a UN mission, authorized by the Security Council of the UN. It just happens to be that the UN members who have chosen to participate are also members of NATO. I believe there is some participation by Dubai as well, which is a non-NATO nation.
BEcause Turkish people are awesome