HE was the star at the Regional Asian Seminar on Anti-Corruption, held in Bali last week. His work—recovering in four years’ time, billions of dollars of Nigeria’s wealth looted by the country’s corruptors—became the reference point of the seminar, which was attended by representatives from 32 countries.

Mallam Nuhu Ribadu chose a different path at a time when corruption in his country was the rule and not the exception. He was then kn