Multilateral diplomacy is literally defined as diplomatic relations between more than two states. It is also known as “conference diplomacy” or “parliamentary diplomacy” because multilateral diplomatic relations are mainly conducted through conferences and face-to-face interaction between leaders or missions of states. Its origins go back to Vienna Congress convened in 1815 after Napoleonic Wars when European powers came up with the idea of balance of power strategy which sustained peace in Europe until WWI. Multilateral diplomacy became popular in the 20th century because problems between states turned into global problems such as peace and security, environment, health, migration, etc. and international actors understood that such problems had to be negotiated and solved through multilateral diplomacy. The rise of democracy and its ideals after WWII resulted in the democratization of diplomacy and diplomatic practices. More importantly, the accountability of states to their domestic public opinion as well as world public opinion necessitated the establishment of the instruments and institutions of multilateral diplomacy. As a result, multilateral conferences or organizations aim to provide the support of all parties in the solution of global problems which require support and initiative of all sides. There are many advantages of multilateral conferences like focusing on specific issues and motivating the parties to find a solution or reach an agreement in a limited period of time. As a result of collaboration among participants, it develops closer relations between states. Finding a solution or reaching an agreement is beneficial for all parties because it increases their prestige and popularity. Due to the limited period of time, multilateral conferences force parties to focus on specific issues and come up with solutions. (İskit, 307-308) On the other hand, multilateral conferences are used by powerful states to make their propaganda as dominant states in the international arena as well as drawing the attention of all states to global problems such as environmental and economic issues. Joining such conferences and organizations increase the prestige of participants. On the contrary, states not joining these multilateral entities may lose their prestige and the right to have a say in ultimate decisions.