are required, a state of war exists and some or all prefer that situation to its alternative, a cease-fire. In this situation, outside intervention may well be ineffective. While obvious, this contrast creates very different sets of problems for the potential peacekeeper or peace enforcer. The first difference that is proposed in advance is the neutral or partisan role each one adopts. Strict neutrality is one of the distinguishing characteristics of the peacekeeping officer, and peacekeeping missions have always forced non-intercommunal forces to maintain fairness on both sides. Acting in another way carries the risk of not being invited by the parties that perceive their prejudices and injustice. A second difference concerns the difficulty