Suspected dissidents disappear after midnight visits to their homes; chilling screams can again be heard from Idi Amin's infamous torture chambers, reopened after a quarter of a century of disuse. From the few that escape come tales of punishment beatings and even mass executions. Welcome to President Yoweri Museveni's Uganda. One of Britain's favourite African states in recent years has, almost unnoticed in the West, become a sinister land where a corrupt regime uses its secret police to rule through fear. The reasons for this transition are not hard to fathom. Mr Museveni has ruled Uganda since 1986, when his...