In this thought-provoking article, Alexander Svitych* argues that nationalism constitutes the ideological core of modern radical right and radical left parties. Hence, he proposes to use the term neo-nationalism (or populist nationalism) to describe the ideology articulated by political parties often described as radical, populist, or nativist. He argues that neo-nationalism is a broader ideology than populism, and that it can be found both in right-wing and left-wing populist parties. He claims that neo-nationalism emerges at the intersectionality of three dimensions: nationalism, populism and radicalism. The ideology articulated by contemporary radical left and radical firght parties shows both populist and nationalist traits, and therefore it should be labelled as neo or populist nationalism.