Moravcsik (1993) has developed the intergovermentalist approach but agreed with many of the key principles, such as the assumption that nations could be seen as rational and departing from realists approach to the state. He also derived insights from classic intergovernmentalism which sees national interests arising in the context of the state’s perception of its relative position in the state system. At the highest level of abstraction, liberal intergovernmentalism is a variant of rationalist approach in international relations theory specifically tailored to explain European integration. On the other hand, liberal intergovermentalism is more rigorous than its antecedents (Hoffman’s intergovermentalism), incorporating within both realist and neo-liberal elements, and dealing explicitly with the interface between domestic and international politics. In other words, liberal intergovernmentalism is a synthetic approach that derives from both realist/liberal elements and domestic/international politics.