While many different areas of the United Nations work with issues of morality and ethics on the international level, their peacekeeping forces and operations rely immensely on these.  As was in the documentary Peacekeepers, the peacekeeping operations of the United Nations are enacted as attempts to “help countries torn by conflict create conditions for sustainable peace.”

As the United Nations is currently comprised of 192 member states, naturally issues between differing cultures would arise regarding the morals and ethics which the UN’s peacekeeping operations are based upon.   These are outlined in the Charter of the UN and each potential peacekeeping operation must adhere to both these moral bases as well as several other regulations.  As each member state designates the responsibility of maintaining international peace and security to the United Nations Security Council upon signing the Charter of the United Nations, these members then also give the UN power to take “collective action” in order to do so.  Thus, each member state also declares that its own moral and ethical standards comply with those of the UN through this charter.  However, in the event that there is doubt that UN involvement would be inappropriate on moral or ethical grounds in certain peacekeeping situations, the Security Council instead “authorizes regional and other international organizations to implement certain peacekeeping or peace enforcement functions.”  These include organizations, such as the European Union, NATO, and the African Union, as well as “coalitions of willing countries.” 

Source: http://www.un.org/issues/m-peace.htm