A covert FBI agent smuggled $1B in cocaine to crush Colombian cartels - and lived to tell the tale

Martin Suarez returned from a morning run in his Puerto Rican gated community in August 1994 to an assassin emerging from the shadows, a Smith & Wesson revolver heavy in his hand. "Don't run, motherf–ker," the man shouted at him, as Suarez recalls in his new book, "Inside the Cartel: How an Undercover FBI Agent...