Studies on energy security in the context of relations between European Union (EU) and Russia tend to focus on cases, with an open conflict related to supply, such as "hard" energy weapons, or on only one fuel, often natural gas. However, there is a need to understand the long-term impacts that energy relations have politically, economically and physically, and their linkages between resilience, sustainability and security. We analyse the Finnish-Russian energy relations as a case study, as they are characterised by a non-conflictual relationship. To assess this complex relationship, we apply the interdependence framework to analyse both the energy systems and energy strategies of Finland and Russia, and the energy security issues related t...