This essay is a case study of the natural gas pipeline Nord Stream 2 and focuses on how the use of ontological security theory can be used to explain energy-security relations between the EU and Russia. By using qualitative content analysis with a focus on narratives – biographical narratives regarding Nord Stream 2 told by Polish and German state agents are analyzed. The analysis showcases how Poland, by drawing on the historical oppression from both Germany and Russia and notions of Russia as “aggressive”, constructs a biographical narrative which can partly explain Poland’s opposition to Nord Stream 2. The german narratives are instead centered around Nord Stream 2 as a purely financial project and the german “ostpolitik” is a prominent feature. Russia is seen as “the other” but not as an aggressive one. Rather, Russia plays a major part in the german biographical narrative as an integral part of the german identity construct. The aim of this study is to provide useful insights in the use of ontological security theory within the study of international relations.