Peace prize winner Obama kills almost five thousand people with Drone strikes. (VIDEO)

The Obama drone program has been shrouded in secrecy, but after the leaking of the 'kill list' white papers many critics are demanding transparency from the administration when it comes to the exact number of causalities.

Due to the confidentiality of drone strikes abroad, it has proven difficult to get an accurate figure of how many people have lost their lives to the unmanned crafts, but US Sen. Lindsey Graham (R-SC) has reportedly estimated that 4,700 people have been killed and as of now it is unclear how he obtained that figure. Investigative reporter Marcy Wheeler joins us to talk about how the senator came to that estimate and how the Obama administration is reacting to the claim.