1993- Twelfth (Latest) Enlargement: Comoros ---
2011- Shrinkage: Separation of South Sudan
The Arab League was established in 1945 with 7 founding states, and today the League has 22 members. The League witnessed 11 enlargements, with the largest in 1971 with four members of the Arab states of the Persian Gulf joining the League.
Future enlargements are not clear now, with only three Arabic-speaking countries remaining out of the League - Eritrea, Chad, and Israel. Due to a clause in the Charter of the Arab League that accords the right of territories that have splintered off from an Arab League member state to join the organization, the nascent South Sudan has been assured full membership in the Arab League should the country's government choose to seek it. Alternatively, the nation could opt for observer status.
To be considered for membership, Eritrea needs to improve its relations with other neighboring members of the organization, including Djibouti, Sudan and Somalia. Chad's candidacy was endorsed by the Egyptian government under Hosni Mubarak in 2010 Chad applied for membership on March 25 2014.
A representative of the South Sudanese administration indicated that South Sudan would not be joining the League since the government believes that the territory does not meet the pre-conditions necessary for inclusion; specifically, that "the League requires that the countries must be Arabic speaking countries that consider Arabic language the main language of the nation; on top of that, the league also requires that the people of that particular country must believe that they are actually Arabs. The people of Southern Sudan are not of Arabic origin, so I don’t think there will be anybody in Southern Sudan who will consider joining the Arab league". However, in March 2014 South Sudan applied to join the Arab League.