Tributes pour in for Jesse Jackson

Politicians from across the spectrum have been paying tribute to the life and legacy of Jesse Jackson, the US civil rights leader who has died aged 84. We talk to the US Congressman Danny Davis who's known personally since he was a young manAlso on the programme: Iran has said it has reached an understanding with the US on the main "guiding principles" to resolve their dispute over Tehran's nuclear programme; and we ask whether Russian athletes will be allowed again to take part in the Olympics?(Photo: US civil rights campaigner Reverend Jesse Jackson stands on the Thames riverside in Lambeth, south London, after launching Operation Black Vote in upcoming UK general elections. Credit: PA John Stillwell)