Presented by James Naughtie and Nick Robinson. One of the world's most wanted men Radovan Karadzic, has been arrested. He is twice indicted for genocide. Author Misha Glenny, who was a BBC correspondent in the Balkans, explains the developments. Robert Mugabe and Morgan Tsvangarai have signed a deal to talk about who should run Zimbabwe. Peter Hain, the former minister for Africa, says there is still much to do if a deal is to be done. Scientists are hailing a new drug to treat aggressive prostate cancer as potentially the most significant advance in the field for 70 years. Dr Johann de Bono, who led the research, says it is a major step forward. Thought for the day with novelist and columnist Anne Atkins. Bosnian Serb war crimes suspect Radovan Karadzic, one of the world's most wanted men, has been arrested in Serbia after 13 years on the run. Kemal Pervanic, who was sent to a 'concentration camp' by Karadic, and Lord Ashdown, former high representative for Bosnia and Herzegovina, discuss how important this arrest is. With David Cameron, Boris Johnson and George Osborne favouring two wheels over four, political, and now cycling, correspondent Norman Smith reports on whether the bike is now a symbol of the new Tory party? After Princess Anne was seen wearing the same outfit she sported at a wedding 27 years ago, the fashion press have started debating whether this is the ultimate faux pas or a welcome Royal endorsement for recycling. Hadley Freeman, of the Guardian, and fashion designer Paul Costelloe discuss the princess's fashion sense. Barack Obama has arrived in Jordan, the latest destination in his world tour. Correspondent James Coomarasamy reports. What will happen now to Radovan Karadzic? Former foreign secretary Lord Owen and correspondent Jeremy Bowen discuss the process ahead for the alleged war criminal.