Arabian Gulf or the Persian Gulf: is the arm of the Arabian Sea, extending from Gulf of Oman in the south to along the Shatt-AL Arab in the north. Its length around 965 km from Shatt-Al Arab to the Hormuz fjord, which links it in the Gulf of Oman.
The gulf separates the Arabian Peninsula and south-western of Iran, and overlooking it eight countries including Iraq, Kuwait, Saudi Arabia, Bahrain, Qatar, UAE and Oman and Iran.

In addition, The Arabian Gulf includes oil and gas fields. In 25 May 1981, arab countries overlooking the Arabian Gulf formed a political and economic union in particular called: "Cooperation Council for the Arab Gulf States". They are an Arab regional organization composed of six members of the overlooks the Arabian Gulf are Saudi Arabia, UAE, Kuwait, Oman, Qatar and Bahrain. Council was based on the linking the six countries of their special relations, common features, similar systems, and unity of purpose.

The Persian Gulf War all started because of one country’s greed for oil. Iraq accused Kuwait of pumping oil and not sharing the benefits, and Kuwait was pumping more oil than allowed under quotas set by the Organization of Petroleum Exporting Countries, it decreased the price of oil, Iraq's main export. Iraq's complaints against Kuwait grew more and more harsh, but they were mostly about money. When Iraqi forces began to assemble near the Kuwaiti border in the summer of 1990, several Arab states tried to intervene the dispute. Kuwait didn’t want to look weak so they didn’t ask for any help from the United States or other non-Arab powers for support.
By annexing Kuwait, Iraq gained control of 20 percent of the world’s oil reserves and, for the first time, a substantial coastline on the Persian Gulf. The same day, the United Nations Security Council unanimously denounced the invasion and demanded Iraq’s immediate withdrawal from Kuwait. On August 6, the Security Council imposed a worldwide ban on trade with Iraq.

The security issue has been the chief concern for the Gulf Cooperation Council Countries (GCC) Since Gulf War I in 1981. The geographic location and plenty of natural resources in light of the small population have always been real obstacles for the GCC leaders. Furthermore, the decline of Iraq as a major regional force tipped the balance of power in favor of the huge Iranian population and capabilities, leading to an urgent need to build up a national and joint military power represented by the Peninsula Shield Force in 1982 to protect the GCC members against any military threat.
In the absence of strategic balance and absolute sovereignty, the regional unrest and recurrent developments will definitely continue to create new challenges for the GCC countries.