Political sociology in the field of security asks two basic questions: what does ‘security’ mean and how does it function. Sociology shows that the only constructivist position allows to show clearly security and its lack as the result of securitization processes (structures), demanding a unique approach from the politics related to the existence of different institutions managing security crises. Existentialism as a phenomenon that arises and passes away from uncertainty to the life with the sense of of insecurity, hence arises the dilemma of interpretation and dilemma of reaction. This state of invincible uncertainty can be perceived as a source of loads that make up the security dilemma.