A potential agreement between Iran and the United States is prompting Gulf nations to reassess their regional security strategies. Currently, many Gulf states rely heavily on the US for defense and security cooperation. A diminished US security commitment, resulting from a deal with Iran, could necessitate a re-evaluation of existing alliances and defense policies. Discussions are underway regarding potential collective security arrangements among Gulf Cooperation Council (GCC) members to ensure regional stability. This review may involve strengthening internal cooperation, diversifying security partnerships, and investing in independent defense capabilities. The outcome will likely shape the future security landscape of the Gulf region, regardless of the specifics of any Iran-US agreement. Experts suggest this presents both challenges and opportunities for the Gulf states to forge a more self-reliant security architecture.