The Cold War exploded in Zanzibar in 1964 when African rebels slaughtered one of every ten Arabs. Led by a strange, messianic Ugandan, Cuban-trained factions headed the rebels, making Zanzibar (in the eyes of Washington) a potentially cancerous base for the communist subversion of mainland Africa. Exotic Zanzibar - fabled island of spices, former slave-trading entrep t, and stepping-off point for 19th century expeditions into the vast interior of...