Once the provisional mechanism for launching peace operations hail been established by the "United for Peace" Resolution and joined to tin-mechanism of collective coercion set out in the Chapter VII of the charter, and, once their actions and tools had been improved, they made it possible to create relatively consistent and reliable mechanism of conducting ting the United Nations peace operations. During the UN peace operation conducted by UNPROFOR on I he territory of the Socialist Federal Republic of Yugoslavia, over a period of it time NATO forces were used, and their classic combat operations were combined with standard operations of UN peacekeeping forces during, the legitimate UNPROFOR mandate. Thus, practically, a precedent was made in the United Nations peace operations practice. Besides, through the effective use of force, UN peace forces acting at the expense of one of the conflicting parties drastically violated the principle of impartiality Thus these operations developed partly into peace-enforcement operations, although they did not completely lose the connection with the original peace operations of the United Nations. The UN peace operations that were launched to settle the crises "Kosovo and Metohija (KFOR/UNMIK) and Afghanistan (ISAF). 01 an planned to be launched over the Iraqi crisis, had been preceded by standard intervention of US and/or NATO (or of a number of the Alliance's member states) Coalition forces without and approval of the Security Council This made these acts typical aggressions against sovereign members of the United Nations. Standard UN peacekeeping mandates were mostly conferred upon the forces that directly or indirectly took part in the aggression. which a priori discredited their legitimacy. Finally, the peace operations of these forces are conducted on the territories of the countries that are partly or fully under the occupation regime, and "shadowed" In-continual or periodical standard combat operations, which additionally compromises their peacekeeping nature and definitely qualifies them as peace-enforcement operations.