The aim of this thesis is to explore the impact of geopolitics and EU financial sanctions on the stability of Sberbank, and to analyze the complexity and interconnectedness between the concepts of geopolitics, financial sanctions, and banking sector stability by focusing on a specific case study that relates these three concepts – the case of Sberbank. The research describes the concrete political-economic measures taken by European institutions and the EU banking sector, such as asset freezes, transaction account restrictions, and limitations on the use of payment mechanisms like SWIFT accounts. These measures serve as tools to address complex geopolitical situations while ensuring financial stability, and their impact on the banking system is examined. For this reason, the thesis analyzes the operations of Sberbank from its inception, including its establishment, business activities, asset structure, expansion policies through subsidiaries, as well as how countries responded at the time of Russia's attack on Ukraine and how sanctions affected the stability of Sberbank's subsidiary operations. Among Sberbank's subsidiaries, particular emphasis will be placed on and extensively analyzed are the branches in Austria (Sberbank Europe AG), Croatia (Sberbank d.d.), and Slovenia (Sberbank d.d.).