Presented by James Naughtie and Sarah Montague.
Armed Forces Minister Bill Rammell discusses if Britain can afford the defence equipment it intends to buy.
The Guardian Council in Iran declared, after a partial recount of votes, that the election of President Mahmoud Ahmadinejad was fair. BBC Iranian affairs analyst Sadeq Saba considers if this will mean an end to dissident protests.
Former Mayor of London Ken Livingstone discusses government plans to boost the supply of social housing.
The Harlequin ladybird is putting over 1,000 species in the UK in peril, scientists have warned. Dr Helen Roy, of the Centre for Ecology and Hydrology, discusses the danger.
Justine Roberts, of the website Mumsnet, and Dr Richard Jarvis discuss doctors' warnings that throwing 'swine flu parties' in an attempt to get immunity against the virus in a fairly mild form could be dangerous.
Andy Murray has reached his second successive grand slam quarter-final. Sports presenter Garry Richardson reflects on the latest ever Wimbledon finish.
Thought for the Day with the Rev Rosemary Lain-Priestly, of the Women's Ministry in London.
Children's Secretary Ed Balls explains the last major education legislation for England before the next general election.
Correspondent Jim Muir and US Foreign Affairs adviser Lawrence Korb reflect on the withdrawal of US troops from Iraqi cities.
Explorer Benedict Allen and Sunand Prasad, President of the Royal Institute of British Architects, explain how to keep cool in temperatures of 32 degrees Celsius.
Lord Ashdown says there is a nine billion pound hole in the UK defence budget each year.
Middle East editor Jeremy Bowen reflects on his time in Iran.
Broadcaster and journalist Ian Hislop explains his view on 'indoor' tennis at the Wimbledon tennis championships.
South African judge Albie Sachs and Roisin McDonough, Chief Executive of the Arts Council of Northern Ireland, discuss the launch of a digital archive of art from the Troubles.
Shadow Schools Secretary Michael Gove and Independent columnist Steve Richards discuss if the prime minister is being dishonest about future public spending policy. Show less