The United Nations Security Council is the most important body of the United Nations in the field of maintenance of international peace and security. Under Chapter VII of the United Nations Charter, it can take legally binding decisions for this purpose, including authorizing the use of armed force as a last resort. However, despite its broad powers, it often appears powerless in the face of numerous armed conflicts that threaten international peace and security. This master's thesis examines the functioning of the Security Council in the cases of armed conflicts between the Russian Federation and Ukraine and between Israel and Hamas in Gaza. In both cases, the Security Council was unable to take effective action to stop the conflicts. The reason for this can be found in the veto power of the permanent members of the Security Council, which allows them to unilaterally block Security Council decisions that would be contrary to their political interests, even at the expense of international peace and security. All attempts to reform the composition and functioning of the Security Council have been unsuccessful to date. Alternatives such as the "Uniting for Peace" resolution of the United Nations General Assembly, the principle of responsibility to protect, or interventions outside the framework of the United Nations, cannot replace the role of the Security Council in the maintenance of international peace and security, as they lack either the legally binding effect or the legitimacy in the eyes of the international community compared to Security Council resolutions. Various informal initiatives have been launched to voluntarily restrict the use of the veto by permanent members of the Security Council in cases of mass atrocities, but their effect has been limited, as most permanent members of the Security Council have not joined them.
The hypothesis of this master's thesis is that the structure of the United Nations Security Council with the institution of permanent members with veto power prevents it from taking effective action for the maintenance of international peace and security.
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