The Gulf Cooperation Council (GCC) was established on May 25, 1981, through an agreement signed in Abu Dhabi by Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates. The Council is headquartered in Riyadh and currently comprises 15% of the total population and 70% of the national income of the Arabic-speaking countries. The primary objectives of the GCC are to promote cooperation among member states in the economic, social, cultural, and security fields. To this end, the Council has established a number of institutional mechanisms, including the Supreme Council, the Council of Ministers, the General Secretariat, the Monetary Council, and the Gulf Consultative Organization for Industrialization. The establishment of the Council was driven by two primary motivations: security concerns and economic interests. The 1979 Islamic Revolution in Iran, the Soviet invasion of Afghanistan, and regional developments such as the Iran-Iraq War engendered a grave perception of threat to the Gulf states, thereby necessitating the establishment of a collective security mechanism. Nevertheless, the ineffectiveness of joint defense initiatives, such as the Gulf Shield Force, has had a deleterious effect on security integration efforts. From an economic perspective, the formation of the GCC was driven by the imperative to diversify its economic structure, which was heavily reliant on oil, to remove trade and investment barriers, and to develop common policies in pivotal sectors such as industry, agriculture, transportation, and energy. A significant milestone was the signing of the Unified Economic Agreement in November 1981, which aimed to facilitate the free movement of capital and labor, establish a unified customs tariff, and deepen financial and trade integration among member states. In 1983, a free trade agreement was ratified, granting customs duty exemptions for goods produced between member states. In 1986, a common customs tariff was introduced for goods from third countries. The Customs Union, initially planned to become fully operational in 2003, did not achieve full implementation until 2015. However, the targeted level of integration has not been achieved due to weak institutional mechanisms, political disagreements among member states, and the lack of full implementation of economic policies. The concept of a monetary union was introduced in 1982 under the Economic Agreement, and the first concrete steps were taken in 2002 when member states adopted an exchange rate system linked to the US dollar. By 2010, the intention was to adopt a common currency; however, this did not occur due to the lack of participation of the UAE and Oman, who did not join the process due to their ongoing disagreements with Saudi Arabia regarding the location of the central bank. Consequently, the anticipated monetary union by 2010 failed to materialize. While projects such as the Customs Union and the Common Market have shown progress, significant shortcomings persist in areas such as monetary union and security cooperation.