The strategic competition between the United States and the People's Republic of China has entered a new phase since the second decade of the new millennium. This strategic competition, which has been on the agenda of all US presidents since 2010, has had a great impact on developments in the Middle East and its sub-region, the Persian Gulf, and has led to increased tension and conflict between regional powers, either directly or indirectly. Because regional powers see the competition between China and the United States as a valuable opportunity to impose their desired order on the region. Therefore, the main issue of this article is to examine the impact of the strategic competition between the United States and China on the existing tensions between the Islamic Republic of Iran and the Israeli regime. The article seeks to answer the question of what impact the strategic competition between the United States and the People's Republic of China has on the existing tensions between Iran and the Israeli regime. The change from indirect and proxy conflicts to direct and military conflicts, the expansion and increase in the scope of tensions and conflicts between the Islamic Republic of Iran and the Israeli regime, the Arab turn towards normalizing relations with Tel Aviv and creating a rift between Tehran and the Arab capitals, and the acceleration of American officials for the final resolution of the issues and crises in the Middle East and, as a result, direct entry into the conflict between Tehran and Tel Aviv, are among the most important effects of the strategic competition between the United States and China on the tension between the Islamic Republic of Iran and the Israeli regime