In a process that began to gain increasingly importance of international efforts to find solutions to transboundary environmental problems, it was observed that the United Nations has taken an important step with the UNFCCC in this regard. The convention, opened for signature by the UN at the United Nations Conference on Environment and Development in Rio in 1992, entered into force on 21 March 1994 with the approval of the countries. Since the entry into force of the UNFCCC, “the parties conference (COP)” has been organized every year and 24 “parties conference” has been held in different cities of the world until the end of 2018. The aim of this study is to determine what kind of developments have experienced within the UN on the problem of climate change, and how much could be done. Especially for this, it will be referred to the conferences, agreements, protocols and agreements that are held under the auspices of the UN and the UNSC’s approach to the problem of climate change. In this context, the UNFCCC will be examined and considered as an important beginning, and it will be approached in more detail to the Paris Agreement and the Kyoto Protocol, which is the product of the two parties conference.