打击有罪不罚现象并确保依据国际法将最严重罪行绳之以法是主要由各国承担的核心义务。因此，至关重要的是，各国不仅要相互合作，还要同余留机制开展合作。在这方面，最近的事态令人不安。实际上，被卢旺达问题国际刑事法庭定罪的8人中有1人看来仍然逍遥法外。
The fight against impunity and ensuring that justice is handed down for the most serious crimes under international law are among the core obligations that are incumbent primarily upon each State. For that reason, it is of vital importance for all countries to cooperate not only among themselves but also with the Mechanism. In that respect, recent developments are alarming. Indeed, one of the eight indicted persons before the International Criminal Tribunal for Rwanda apparently remains at large.