As RT's editor-in-chief, Margarita Simonyan runs a news network described by US intelligence as "the Kremlin's principal international propaganda outlet". Formerly known as Russia Today, RT risks being stripped of its UK broadcast licence in the wake of the Salisbury spy poisoning. So who is the woman at its helm?
Born into an Armenian family in Krasnodar in Southern Russia, Simonyan grew up in poverty, but her academic achievements helped her win a place on a prestigious exchange program to the United States. Arriving in New Hampshire just four years after the collapse of the Soviet Union, the experience changed her life. Initially shocked by the excesses of Western capitalism, Simonyan soon found her feet and was even crowned 'Carnival Queen' of her All-American high school.
After returning to Russia, Simonyan started a career in journalism, becoming a household name after reporting from the carnage of the Beslan school siege. Shortly after, when she was just 25, she was handpicked to create the new Kremlin-funded international news network Russia Today. Controversy has dogged the channel, with allegations of pro-Kremlin propaganda and biased reporting, but all agree that under Simonyan's leadership the channel has given Russia a far bigger - and stronger - voice abroad.
Married with two children, Simonyan is known by her friends for her love of disco, Cossack folk music and traditional cooking - including boiled beaver's head. Mark Coles asks some of those who know her best what drives her - including her best friend and the American woman who offered to adopt her as a teenager.
Presenter: Mark Coles
Producers: Beth Sagar-Fenton & Jordan Dunbar
Researcher: Sylvie Carlos.
Sir Bradley Wiggins
Cycling hero Bradley Wiggins was accused by MPs this week of "crossing an ethical line" by taking medication that could have enhanced his race performance. Rising from a rocky start to become Great Britain's most decorated Olympian, Wiggins has lived a fascinating life including murder, mods and music. Can his reputation survive this?
Presented by Mark Coles
Produced by Jordan Dunbar and Beth Sagar-Fenton.
Staffan de Mistura
As the United Nations' Special Envoy to Syria, Staffan de Mistura is said to have one of the toughest jobs in the world. Edward Stourton talks to the people who know him best to find out what drives him and how he is navigating one of the most complex conflicts in recent history.
Born in Stockholm to a Swedish mother and an Italian father, de Mistura went to primary school on the island of Capri, where he was taught by Catholic nuns who instilled in him a strong faith and a desire to help other people.
Growing up in a privileged and aristocratic family, he went on to attend a prestigious Catholic secondary school in Rome, where friends say he knew from an early age that he wanted to work for the United Nations.
His diplomatic career includes stints in some of the world's trickiest war zones - from Sudan to Kosovo, Iraq to Afghanistan, and now Syria. He has a distinctive sense of style and is known for his charm and love of the finer things of life. We also hear about the 'linguistic acrobatics' and the wry sense of humour that have helped him survive in hostile situations.
Producer: Arlene Gregorius.
Black Panther star Daniel Kaluuya has already won BAFTA's Rising Star award and now he's been nominated for a Best Actor Oscar. The 28-year-old Londoner is up against acting giants Daniel Day-Lewis, Gary Oldman and Denzel Washington, having been shortlisted for his role in the satirical horror movie Get Out.
Raised by his Ugandan mother, who remains an inspiration, Kaluuya grew up on a council estate in North London. He first came to public attention as a teenager, when he wrote and performed in the hit television series, Skins. But he's been acting and writing from an early age, having won a play-writing competition when he was nine and impressed talent spotters when he was still at school.
Mark Coles talks to those who recognised and nurtured the young Kaluuya's talents, including his A level drama teacher Jo Fenton, the co-creator of Skins Bryan Elsley, playwright Roy Williams and the director of his forthcoming film Widows, Steve McQueen.
Producer: Arlene Gregorius.
Becky Milligan looks back at the extraordinary life of South Africa's new president. From humble beginnings, he became a lawyer, established the country's most powerful trade union organisation and was a key player in negotiating the end of apartheid. After losing out at an earlier attempt to become president, he turned to business and rapidly became one of South Africa's richest men - while also attracting controversy over allegations about his role during the Marikana massacre of striking miners. As he takes power, what really makes him tick?
Producer: Smita Patel
Researcher: Darin Graham
Editor Hugh Levinson.