As George W Bush welcomes Barack Obama and his family to the White House, we look at the often tricky task of handing over the keys.

Nick Bryant explores US President-elect Barack Obama's path to the White House.

Key facts, figures and dates

A London banker invests £1m to transform polo into an urban spectator sport that he hopes will generate income from the sale of television rights, sponsorship deals, corporate entertainment and ticket sales.

Barack Obama has been elected the 44th President of the United States. BBC correspondents report on the mixed expectations from around the world.

Celtic move into the last four of the Co-operative Insurance Cup with victory over Kilmarnock at Rugby Park.

The cold snap will ease slightly after heavy snow in some parts of the UK, say weather forecasters.

A chronology of key events

Until a few days ago, Britain was admired and respected by the average Icelander. But the UK's moves to seize the assets of this isolated European state have provoked a backlash of feeling and escalating resentment.

Rwanda's cabinet decides all education will be taught in English instead of French.

What politicians and others are saying about Peter Mandelson's return to government.

Peter Mandelson says he is surprised but proud to be invited into the government for a third time.

Peter Mandelson has said he is proud and surprised to have been asked to return to the government, after being forced to resign two cabinet posts.

Russia's president says the era of US global economic dominance is over, after talks with the German chancellor.

Advertising cartoon characters are failing to promote healthy eating in children, consumer group Which? says.

The winners of BBC talent show Last Choir Standing sign a five-album deal with a record company.

Fernando Alonso wins the Singapore Grand Prix, with Lewis Hamilton third, after a disastrous pit stop ruins Felipe Massa's race.

Prominent French writer Pierre Pean is on trial in Paris accused of inciting racial hatred in a book on Rwanda's genocide.

A former senior official at Estonia's defence ministry and his wife are arrested on suspicion of spying, prosecutors say.