Start the Week - 28/02/2011

Andrew Marr with the former UN deputy secretary-general Mark Malloch-Brown, who argues that national governments are no longer equipped to address complex international issues. The Conservative MP Daniel Kawczynski describes the "corrupt grandiosity" of the Libyan leader Colonel Gaddafi, and explains what is meant by the government's 'principled engagement' with the country. The historian David Gilmour looks back a hundred and fifty years to the unification of Italy, and considers whether it has ever really become a coherent nation-state. And the human rights lawyer, Baroness Helena Kennedy, believes we need to be more judgemental if we are to live an ethical life.

Producer: Katy Hickman.

Start the Week - 21/02/2011

Andrew Marr talks to Simon Wessely about the mental health of soldiers serving in Iraq and Afghanistan, and explores why British personnel appear to have fared so much better than their American counterparts. The historian John Stubbs revels in the antics of the Cavaliers - the 17th century dandies and political intriguers, loyal to the king. The experimental physicist Athene Donald argues that science is as creative as the arts, and describes how studying the texture of yoghurt could help the treatment of dementia. And Simon Sebag Montefiore studies the texture of a city - Jerusalem. His epic 3000 year history is a chronicle of faith and power, diversity and co-existence.

Producer: Katy Hickman.