​This paper aims to analyze European Gulf relations based on the Interdependence created by the 1988 agreement, and the subsequent transformations in the relationships. The interdependence approach assumes that there is an overlap of interests between both parties, and a degree of mutual engagement, thus limiting conflict and enhancing cooperation and coordination, which entails harmonizing the movement of its parties within the international system. Nonetheless testing the effectiveness of this approach in the context of a crisis which divides one of the parties (the Gulf in our case) remains problematic. The paper tries to probe this issue, and reveal the limitations of the interdependence model in this context.  It similarly attempts to test the impact of the Gulf Crisis on a European Sub Policy towards the Gulf by analyzing the behaviours of the main actors in the EU  (Germany, France, and- despite brexit- the UK).