Back in 1980 when he was a student leader in his native Korea, Samsung Electronics CEO and President Sung Yoon got to hear about Nelson Mandela. And on the 11th July he intends honouring the centenary of South Africa's icon by joining members of his executive team at Liliesleaf for the annual CEO SleepOut. He explains why in this interview with Biznews.com's Alec Hogg.