The UN was not created as a means to govern the world and all of the States within it. It is a forum of discussion between nations where states can voice their views to the international community as opposed to the old system of one on one communication that so often lead to war before. There are rules in the UN charter that are stated to be binding to all members. But the intention behind this was not to give up all national loyalties to obey the UN but to act as a reasonable course of last resort when there were no clear alternatives. The UN is our diplomatic backup when direct relations fail and has been vital in establishing peace in the world since its creation.
The United Nations (UN) is an intergovernmental organization established on 24 October 1945 to promote international co-operation. More: en.wikipedia.org.
Pretty useless when the most guilty of countries in the world are the ones who hold the most power. You know its true when Iran is heading the Human Rights Council!