The concept of strategic culture shows how traditions, stereotypes, or prevailing patterns of behaviour shape major strategic decisions. The research provides a fresh perspective on how Lithuanian strategic culture influences the internal dynamics of decision-making procedures. The article gives the particular attention to key three debates in Lithuania: defence budget, participation in international operations, and military reform. This article shows that certain characteristics of Lithuanian strategic culture, such as elitism, a huge reliance on the state, and the militarization of security, exercise a huge impact upon defence policy decisions. The article provides concrete recommendations how to overcome existing deficiencies and improve the decision-making procedures in Lithuania.