Eleven years ago when I opened the Rome conference that led to the founding of the International Criminal Court, I reminded the delegates that the eyes of the victims of past crimes and the potential victims of future ones were fixed firmly upon them. The delegates, many of whom were African, acted on that unique opportunity and created an institution to strengthen justice and the rule of law.

Now that important legacy rests once more in the hands of African leaders as they meet in Libya on Wednesday. The African Union summit meeting will be the first since the I.C.C. issued an arrest warrant for Sudan’s president, Omar Hassan al-Bashir, on charges of crimes against humanity and war crimes for his alleged role in the atrocities in Darfur.