09/13/2012 08:51 pm ET Updated Sep 14, 2012

Revealed: Inside Story Of U.S. Envoy's Assassination

The killings of the US ambassador to Libya and three of his staff were likely to have been the result of a serious and continuing security breach, The Independent can reveal.

American officials believe the attack was planned, but Chris Stevens had been back in the country only a short while and the details of his visit to Benghazi, where he and his staff died, were meant to be confidential.

Read more on The Independent