Agora, a respectiva legenda:

1. Threatening emails: Early in the summer, Jill Kelley complains to an FBI friend about being sent harassing emails. The FBI later establishes they came from Paula Broadwell, who co-authored a biography of Gen David Petraeus.

2. Affair: The FBI investigation also reveals emails between Mrs Broadwell - a married former military officer - and Gen Petraeus that indicate they were having an extra-marital affair.

3. Family friends: Jill Kelley and her husband, Scott, are family friends of Gen Petraeus and his wife, Holly. Officials say Mrs Broadwell saw Mrs Kelley as a rival for Gen Petraeus's attentions. However, there is no suggestion Mrs Kelley and Gen Petraeus had an affair.

4. "Inappropriate emails" investigated: The top US commander in Afghanistan, Gen John Allen, is now being investigated for allegedly sending "inappropriate emails" to Jill Kelley. The FBI has referred the matter to the Pentagon. A senior official says up to 30,000 pages of emails and other documents are under review.

Com a cortesia da BBC News