The academic debate on regime complexes is still very recent. This contribution aims continuing this research by studying how one regime can gain in popularity in IOs. Indeed, the food security regime complex is composed of three regimes: food security, international trade and human rights. Recently, the human rights regime has been more and more included in food security policies. This paper aims at understanding what role ideas played in socializing the FAO to the human rights regime. In order to do so, we analyse, by using secondary literature, official documents and interviews, two levels of interactions: the level of the norms and the level of the actors involved. Our findings show that, despite the increasing importance of the human right regime, the three regimes are still in conflict across these levels. Because the food security regime complex is highly fragmented, ideas do not impact equally all the actors involved.
