Josette Sheeran is the head of the UN World Food Programme, the body set up to combat world poverty.
She explains the reasons for the current food crisis and what the international community can do to help.
Also, Sir David is joined by Maria Emma Mejia, former Colombian foreign minister and the head of the Organisation of American States’ mission to supervise the electoral process in Paraguay.
Egyptian political exile, Saad Eddin Ibrahim, discusses Egypt’s local elections and the recent rioting over food, wages and political repression.
In Egypt’s local elections only one in three council seats were contested after more than 800 members of the Muslim Brotherhood were arrested.
Sociology Professor, Saad Eddin Ibrahim is a leading human rights advocate and founder of the Ibn Khaldun Centre, an independent think-tank.
He was jailed in 2000, for “tarnishing Egypt’s image,” and sentenced to seven years in prison.
Race has re-emerged as an issue in a country ill-at ease with its ethnic diversity.
Serbia’s Prime Minister - Vojislav Kostunica - has condemned Kosovo’s declaration as illegal.
He says it goes against the principles of international law.
The response on the streets of Belgrade has also been angry.
Nazanine Moshiri reports from the Serbian capital.
Al Jazeera’s Tim Friend in France reports on the violence that has engulfed some of Paris’ suburbs.