April 11 2002. About 10.20am. A coach full of German tourists is bumping down the road that leads to the ancient El Ghriba synagogue on the Tunisian island of Djerba. Around the corner, in a narrow, cobbled lane that runs alongside, an old Iveco tanker truck is waiting, driver inside.

A Lesotho court this week fined a Canadian construction company, Acres International, ,5-million for paying bribes on the country’s multibillion-dollar dam project. The sentence is the first in a series of unprecedented trials against some of leading dam designers and builders.