Stephen Sackur talks to Catherine McCartney whose brother was murdered in Belfast in 2005. She thinks the IRA was responsible, and that the Republican paramilitaries are still active to this day. The charge - that the IRA has not gone away - now threatens Northern Ireland’s fragile political stability - but is it true?

(Photo: Catherine McCartney)

The fashion world today is full of numerous brands and designers - but one stands out as a pioneer of women’s high street fashion: Biba created by design icon Barbara Hulanicki. Born in Poland but raised in Britain her shops were a hangout for some of the most famous names in swinging sixties London. The rise and fall of Biba was a personal tragedy for her. But Barbara Hulanicki’s legacy is intact: she made fashion affordable for the masses. But has she helped bring about a throwaway culture that expects cheap and fashionable clothing?

Picture shows: Designer Barbara Hulanicki at Milan Fashion Week Menswear in 2009. Credit: Vittorio Zunino Celotto/Getty Images

The migrant crisis is pushing EU countries into trying to come up with solutions that are fair for member states and refugees fleeing conflict. There is evidence that people smugglers from the western Balkans are involved in the movement of thousands of migrants and are increasingly favouring land routes through Balkan states like Macedonia. Hardtalk asks the Macedonian Foreign Minister Nikola Poposki what can governments like his do to resolve the current crisis?

(Photo: Macedonia's Foreign Minister Nikola Poposki. Credit: AFP/Getty Images)

What does the leadership battle for Britain’s Labour Party tell us about left of centre politics in Britain and elsewhere in the world? If the polls are correct, then the veteran MP Jeremy Corbyn, is set to become the new Labour leader this month. He is the most left-wing of the four contestants and his anti-austerity economic policy is based on printing money for increased public spending and state ownership of major industries. After a huge defeat for Labour in May’s general election and a big swing to the Conservatives would Labour and other similar parties in Europe be more popular with voters by holding to the centre-ground?

(Photo: From left, Charles Clarke and Ken Livingstone)

Stephen Sackur speaks to writer and publisher Jürgen Todenhöfer, who embarked on one of the most hazardous journeys imaginable for a western journalist. Last December, the 74-year-old German spent 10 days inside the territory controlled by the so-called Islamic State movement. He was taken to the group's base in Raqqa, Syria, and then to their most highly prized asset in Iraq - the northern city of Mosul. He emerged unscathed with a remarkable story. What motivates the jihadist fighters?

Earlier this year Zeinab Badawi went to Malta to meet Suha Arafat - the widow of the late Palestinian leader Yasser Arafat. Ten years after his death, Mrs Arafat gave a rare broadcast interview about their marriage and tells her why she believes her husband was assassinated and why she has chosen to live in Malta and not amongst the Palestinian people who so revered him.

(Photo: Suha Arafat. Credit: Matthew Mirabelli/AFP/Getty)

Tim Franks speaks to Don McLean - the self-confessed "accidental" pop star whose first unlikely hit became one of the defining songs of the century. In April, the manuscript to American Pie was auctioned for more than a million dollars. McLean has always resisted analysing his famous lyrics too closely but what does he have to say now about the American music industry, and the American dream?

Draw up a list of the greatest living film-makers and Werner Herzog would surely occupy a prominent place. He is responsible for some of the most wildly beautiful images captured on film. If you have seen Fitzcarraldo you won’t have forgotten the steamship being hauled over a mountain. He is seen as the film industry's obsessive genius, the director who once threatened to shoot his lead actor to prevent him quitting. After five decades making movies, is Werner Herzog's love of film as intense as ever?

(Photo: Werner Herzog with an award during the Lola - German Film Awards in 2013. Credit: Andreas Rentz/Getty Images)

Colm Tóibín is an Irish writer whose intense, lyrical novels have won him awards, acclaim and most importantly millions of readers around the world. Colm Tóibín isn't so much a flamboyant storyteller; he's more an acute observer of character and the deepest human feelings. There are recurring themes in his work - loss, mourning, sexual repression and exile which might suggest a dark, brooding presence - but how close is that to the real Colm Tóibín?

(Photo: Colm Tóibín. Credit: Ulf Andersen/Getty Images)

Zeinab Badawi talks to the South African jazz musician and political activist Hugh Masekela. His life and music have reflected the struggles of the anti-apartheid era and the subsequent years of black majority rule. So why does he now describe South Africa as fast turning into a rubbish dump and becoming removed from its authentic African culture?

(Photo: Hugh Masekela. Credit: C Brandon/Redferns/Getty)