In the Arab Gulf States, where social and religious conservatism tends to be the norm, Islam is an important political resource, claimed by regimes and opponents alike. The aim of this workshop is to explore how this resource has been and is still used, reformulated and contested, with a focus on the contemporary period; more specifically, the second half of the 20th century. The Gulf monarchies have historically harbored different brands of Islam, to which the State has developed distinct relationships. In Saudi Arabia, the very construction of the State was closely linked to a particular form of Sunni Islam, Salafism, known for its extreme literalism and its rejection of other Islamic currents. Until today, the Saudi State sees itself as an “Islamic State”, whose laws are based on the Quran and the Sunna. In Kuwait and Bahrain, in contrast, “secular” constitutions (in the sense that they are not derived exclusively from the shari‘a) have been adopted, and the State, while trying to maintain a grip on the expression of religion, has never claimed a special relationship to Islam. Despite these differences, the last few decades have witnessed a relative homogenization of the religious field of discourse in the region, as the Islamic trends found in each country have established a (sometimes significant) presence in all others. The Muslim Brotherhood, whose stronghold was historically Kuwait, are now found almost everywhere, including Saudi Arabia. Salafism has expanded its grip to all other Gulf monarchies, to the point that Salafis now represent a force in both the Kuwaiti and Bahraini parliament. Not only has Salafism as a whole been exported to Kuwait: its different sub-sections – most of which are the result of debates and events that took place in Saudi Arabia – are now also found in the Emirate. The same thing can be said about Shi’ism: the Shirazi and Khatt al-Imam sub-brands of Shi’i Islamism are now present in all Gulf monarchies with a sizeable Shi’i presence. More generally, the Islamic debate is increasingly framed in the same terms, as the region faces the same regional and global challenges: the threat of Iranian power, the dilemmas of US presence, etc.