How have drugs been used in warfare? Why does the cocaine in London nightclubs pass through a dictatorship in West Africa? Why did British soldiers get high on hallucinogens and try to talk to birds? How does heroin bought in the West create a market for child brides? And, should we legalize some drugs?      ------   Power Corrupts is written and narrated by Brian Klaas. The executive producer is George McDonagh. Theme music is by Scott Holmes, and additional music by Lee Rosevere, John Bartman, and Kevin McLeod.