The contribution of women to security, in terms of international security, is (often) considered as an added value, rather than as a key element in ensuring the effectiveness of peace and security policies, and represents a forgotten element of principle of gender equality. The focus of this master thesis is researching the aspects of gender equality and participation of women in the defense sector in Slovenia. The first part of the thesis focuses on reviewing international legal and political commitments in relation to women's involvement in peacekeeping and security processes, highlighting the strengths and weaknesses of current international regulations. The second part includes an analysis of a case study for Slovenia, firstly positioning the aspect of women's involvement in peacekeeping and security processes in the existing gender equality regime in Slovenia, followed by a review of legal and policy documents, including an analysis of the implementation of these documents. An analysis of the implementation of political and legal obligations answers the following questions: are there inclusive recruitment practices and promotion of employment in armed forces for both sexes in Slovenia, the (in)existence of uniforms and equipment suitable for both sexes, legal and de facto family life opportunities, the existence legal instruments for dealing with allegations of sexual harassment complaints within defense sector, as well as the existence of a gender advisor and more. All findings in the research were evaluated through selected indicators, in order to partially assess the implementation of international legal obligations and Slovenia's own commitments.