From ancient times, conflict is always existing in everyday life if there is more than one individual. Conflict was defined as a "process which involves incompatible differences between parties that result in interference or opposition, often finding expression in antagonism and the violation of roles and procedures"(Thomas,1992). Also, conflict was defined as a "breakdown in the decision-making apparatus resulting in difficulty in selecting alternative courses of action" (Assael,1969; Lisa, 2006). According to these theories, where there is a competitive setting among two or more parties, there comes conflict. For example, fighting for a toy between boys can be regarded as a conflict, and a war between countries definitely is a big severe conflict as well. Thus, conflict occurs among most individuals,organizations, and even countries. Apart from that, conflict is always related to needs, politics, beliefs, values, power, and different goals. Those with the most resources always exercise great power over others with limited resources, leading to the emergence of a conflict.…