The development of nuclear power in Belarus is an important issue addressed by Lithuanian foreign policy due to a mixture of geographic, political and nuclear safety concerns. Despite the pronounced relevance, the topic has received very limited academic attention. The paper attempts to fill this gap by identifying key objectives of Lithuanian foreign policy towards Ostrovets NPP and strategy for attaining them. The research is based on the analysis of high-level meetings and statements of six Lithuanian decision makers and a wide range of official documents. The paper argues that despite the apparent focus on nuclear safety of Ostrovets NPP, Lithuanian foreign policy aims to prevent its construction or at least to prolong the process. In order to do this, Lithuanian pressures Belarus via European Union and other international organizations and platforms by highlighting the nuclear safety issues of the plant, Belarusian non-compliance with Espoo and Aarhus conventions and presenting it as matter of international concern.