The rotation of Iran-Saudi Arabia relations in two dimensions of geopolitical interaction and confrontation and the grounds for their formation

Islamic Republic of Iran and Saudi Arabia are undoubtedly two important and determining countries in the Middle East and Persian Gulf region, which typically have vicissitudinous relations. Over time, geopolitical relations of countries have been constantly evolving through several factors such as wars, changes in the regional and the global system, revolutions, and changes in power balances. Over the past four decades (after the Islamic revolution), Iran-Saudi Arabia geopolitical relations have been changed due to a wide range of geopolitical factors which can be found in a variety of internal-external geopolitical factors. This descriptive-analytical paper aims to study the pattern of geopolitical relations between Iran and Saudi Arabia after the Islamic Revolution of Iran. Islamic Revolution in Iran, September 11 attacks, Islamic-awakening, the peaceful end of Iran–Iraq War, energy geopolitics, Shia Crescent, Iran's access to nuclear energy, Regional and international developments such as the coming of Mohamed bin Salman in Saudi Arabia and Donald Tramp in the United States and the key role of transnational powers have been the most factors affecting this geopolitical relations.