Restitution is one of the major challenges confronting the museum world in this century. It not only involves highly emotive and complex issues that reflect changing global power relations, but also has aroused persistent criticism of the historical concentration of "the world's heritage" in the western museums. Since the 2002 Declaration of the Importance and Value of Universal Museums, which was signed by the directors of eighteen of the world's most prominent museums, issues related to restitution have been subjected to enthusiastic debates and captured intensive media attentions. Moreover, the new wave of attention has encouraged innovative and multi-dimensional approaches. For example, the focus of debate has changed from "restitution" to "reunification", from "accusation" to "mediation". This article explores the new frontlines of this subject by focusing on three case studies which involve great works of antiquity that were displaced from their original location and are now displayed in western museums. Special attention is given to mediation as a useful strategy capable of resolving conflicts and reducing tensions. The implication for and the impact on museum worker as well as field of museum studies will also be discussed.