Can the home of 419 internet scams, corruption and voodoo ever transmit a positive image? Is changing Nigeria's image an impossible mission?

In Programme Two, we find out what were spies really up to behind the Iron Curtain.

Every two years teams from all over the world compete with one another in the Chess Olympiad. In the last two Olympiads, the winning medal has gone to a small country in the Caucasus. How has this nation done it? Gabriel Gatehouse investigates.

The BBC's World Affairs Editor John Simpson tells the story of 20 years of post-communist life. Through personal stories, he traces the different roads that East Germany, the Czech Republic and Romania have taken since 1989.

An unprecedented look inside MI6 - Britain's Secret Intelligence Service, which marks its centenary this year.

Imagine that conflict and violence force you to flee your country, leaving behind all that you know and love. In the chaos and panic, you have to choose a single object to take with you - something so full of resonance that it will always remind you of the life and people that you left behind. In the second part of Memento, we meet people who have fled to Britain.

A life sentence for stealing a pair of socks. In California the tough 'three strikes' law is sending people to prison for life even if their third crime is a non-violent one. Now a group of law students is trying to change things. Rob Walker reports.

Yiddish was the language of the Jewish Diaspora, the language of a people on the move across Europe. It has suffered a dramatic decline over the last century. What will become of it now?

The third part of the BBC's definitive series on the banking crash tells the extraordinary story of how politicians reacted, and asks what has been learnt from the entire calamity. Could it happen again?

Imagine that conflict and violence force you to flee your country, leaving behind all that you know and love. In the chaos and panic, you have to choose a single object to take with you - something so full of resonance that it will always remind you of the life and people that you left behind.