Humanitarian intervention is a concept that generates several problems in our time. The idea of humanitarian intervention concerns the modern norms of sovereignty and noninterventional principals. It also concerns the conventional norm, which declares that states are not allowed to interfere in other states’ internal affairs. The use of military force to implement humanitarian intervention is restricted according to international law. This is what this thesis intends to investigate. The purpose was to find out the causes behind the intervention in Libya, which was carried out by NATO. The main questions were (1) to find out if the intervention in Libya was a humanitarian intervention (2) or if there were other motives that were behind the intervention. Two classical international relations theories have been utilized for the analysis. The analysis focused on the five UN Security Council members’ statements and arguments, which have been expressed in the UN Security Council. This issue created a gap between the members of the Security Council, especially between the Western states and the Russian and Chinese authorities