Profile

Narendra Modi is tipped to become the next Prime Minister of India but he's a controversial character, both loved and loathed. In this edition of Profile, Ritula Shah travels to India to find out more about the son of a tea seller who has become a formidable politician. She speaks to the brother he left behind and the tailor who gives him his signature style.Producer: Laura Gray Presenter: Ritula Shah.

Sir Alan Ayckbourn is about to turn 75 years old and one of his best-known plays is currently running at the National Theatre in London. Known for his acerbic social observation and exploration of human relationships, his works are as thought provoking as they are funny. But who is the man behind them? Notoriously reticent, he often prefers his written words to speak for him. In this edition of Profile, Becky Milligan speaks to Sir Alan's close friends and family to find out what drives him, and why.

Mark Coles profiles Noah. As a new Hollywood movie opens starring Russell Crowe, and as part of a celebration of characters on BBC Radio 4, Mark Coles explores the many sides of a figure we keep returning to.

Edward Stourton profiles Matteo Renzi, the new Italian prime minister. He asks if this former boy scout - nicknamed 'demolition man' for his desire to smash the political establishment - can turn around Italy's fortunes. At 39, he is Italy's youngest-ever PM. He wears jeans and a leather jacket and models himself on Tony Blair. Can he live up to his promises?Producer: Chris Bowlby.

Ahead of the budget Mary Ann Sieghart profiles Rupert Harrison. He's the top economic adviser to George Osborne, and the man some call the 'real Chancellor' and 'the most important man you've never heard of'. Those who know him well and have seen his influence grow describe his career and characteristics.Producer: Chris Bowlby Editor: Richard Knight.

Russian president Vladimir Putin's motives and aims are at the heart of the Ukraine crisis.In this week's Profile, Mary Ann Sieghart speaks to those who've watched him closely to explore how his life has shaped his view of the world, and Russia's place in it.We hear about his life as KGB agent, his volatile temper, and the role religion now plays in his life and politics.Producer: Chris Bowlby Editor: Richard Knight.

Janet Yellen is President Obama's choice to replace Ben Bernanke as Chairman of the United States Federal Reserve when his term ends later this month, making her the most powerful central banker in the world and, arguably, the most powerful woman in the world. But who is she? Mary Ann Sieghart finds out - discovering, among other things, how Janet Yellen reacted when an earthquake shook her office.Producer: David Edmonds.

After playing Baltimore drug boss Stringer Bell in The Wire, and Detective John Luther on British television, Idris Elba is now appearing in a very different role - Nelson Mandela in Long Walk to Freedom. Chris Bowlby profiles the British actor who some think will one day be the first black James Bond.Producer: Smita Patel.

As the drama of street protests in Ukraine continues, Mark Coles profiles 'Dr Ironfist', the world boxing champion turned opposition political leader Vitali Klitschko. He's the son of a Soviet air force officer, one of two top boxers with a PhD (the other is his brother Vladimir) and he's nice to his mum. But can he make it in the murky world of Ukrainian politics?Producers: Chris Bowlby, Laura Gray.

Edward Stourton profiles the Michelle Bachelet, the favourite in this weekend's presidential election in Chile. If Bachelet wins as expected, then it will be her second term as president of a country which elected her to office in 2006. Bachelet took 47 per cent of the vote, almost twice as much as her rival, in the first round but it was not enough to secure an outright victory.Bachelet's family were victims of the coup in Chile under General Pinochet in 1973. Her father, an Air Force general who refused to go along with the actions of his brother officers, died after being tortured. The regime also tortured Bachelet herself - and her mother - before allowing them to go into exile, first to Australia and then to East Germany, where they joined many of their compatriots.Profile talks to a fellow Chilean exile who knew Bachelet when she was a student in the GDR, the speechwriter who helped her to victory seven years ago and a British diplomat who helped to sell Chile some second hand frigates and was impressed by Bachelet's plain-dealing.Producer: Mark Savage.