Abstract: The research subject is arms embargo imposed on Libya in 2011. The author analyzes the consequences of the UN Security Council resolutions 1970 and 1973, which had introduced embargo on arms supply to Libya. Special attention is given to the work of the UN institutions in charge of control over sanctions compliance. The author demonstrates the arms embargo’s impact on the armed conflict in Libya in 2011, and the situation with the proliferation of Libyan weapons beyond the country. The author considers such aspects of the topic as the impact of arms embargo on the political crisis in Libya after Gaddafi’s deposition and its role in the 2014-2015 military conflict. The main research method is the principle of historicism, which helps analyze the role of arms embargo in the political crisis in Libya at its different stages in 2011 – 2016. The scientific novelty of the study consists in the consideration of the reasons of toughening or easing of arms embargo against Libya in 2012 – 2016, and the political consequences of these decisions of the UN Security Council. Besides, the author notes the recent tendencies in weapons proliferation in Libya and the reasons of embargo’s ineffectiveness. 

Abstract: The research subject is the UN peacekeeping program “Responsibility to protect”. The author considers one of its components – the “responsibility to react” and its practical application during the events of the Arab Spring in Libya and Syria. Special attention is paid to the comparison of final documents of UN institutions (Security Council, different commissions, etc.) with the “Responsibility to protect” concept. The author points at the significant divergences between the theoretical part of the concept and its practical realization in particular situations. The author applies the method of historicism, comparative analysis, the method of conflictology, the information and political method and the behaviorist approach. The scientific novelty of the study consists in the identification of the place of the “Responsibility to protect” concept in the UN peacekeeping program in conflict settlement during the Arab Spring. Besides, the author reveals this concept’s role in armed conflicts in Libya and Syria since 2011 and defines the practical steps which had been taken within this program on the initial stages of these conflicts.