The wheels of justice turn slowly in Cambodia, but they grind nevertheless. Last month, a United Nations-backed tribunal began the second war crimes trials that attempt to hold accountable the former leaders of the Khmer Rouge. This trial is proving more contentious than its predecessor — in which the defendant accepted both the legitimacy of the tribunal and the need for an accounting. This time, however, the four defendants remain steadfast in their conviction that they did nothing wrong and that even if they did, the court has no authority over them.

This proceeding will render imperfect justice at best. But it will provide some relief for victims and their families. More significantly, it will send the signal — as do all such prosecutions — that there is no escaping such monstrous acts. The reckoning may come late, but it must be seen to be inevitable.

The Extraordinary Chambers of the Courts of Cambodia, commonly known as the Khmer Rouge Tribunal, was set up by the U.N. to try former Khmer Rouge leaders charged with genocide and other war crimes. The court, which has a mix of Cambodian and international judges, along with international prosecutors, was established because of fears that a Cambodian tribunal would be undermined by political interference or sheer incompetence.