Factbox: Key figures in the David Petraeus sex scandal

WASHINGTON (Reuters) - The sex scandal that forced CIA Director David Petraeus to resign has generated bizarre plot twists. Another top general exchanged what have been described as "inappropriate emails" with a key figure in the scandal; both generals were drawn into an ugly child custody battle; and a shirtless FBI agent leaked a report to a congressman. Here are the key players in the story: DAVID PETRAEUS Petraeus, 60, had an affair with his biographer Paula Broadwell, that started in late 2011 and ended about four months ago, according to those close to Petraeus. Ambitious, intellectual and possessor of a steel will, he ended a 37-year Army career in 2011 as a four-star general and one...