“Those Cuban-CIA men (Bay of Pigs vets) were as tough, dedicated and impetuous a group of soldiers as I’ve ever had the honor of commanding,” wrote legendary anti-communist mercenary “Mad Mike” Hoare, commander of the “Wild Geese,” in his book Congo Mercenary. ''This is the history of a failure,'' said the oddly frank opening lines of Che Guevara’s Congo Dairies. “I stood above Che Guevara, my boots near his head, just as Che had once stood over my dear friend and fellow 2506 Brigade member, Nestor Pino. ‘We're going to kill you all," Che said to Pino.’ Now, the situation...