hello and welcome if you're watching in the uk or around the world. tributes have been paid — from around the world — to archbishop desmond tutu — one of the leading figures in the fight against white minority rule in south africa, who has died aged 90. desmond tutu's tireless campaigning against apartheid was rewarded with the nobel peace prize. south africa's president cyril ramaphosa described him as a "patriot without equal". the former us president barack obama said he had been a "mentor, friend and moral compass." current us presidentjoe biden said he was �*heartbroken�*. our africa correspondent, andrew harding, looks back at his life. raise our hands and we say, we will be free! desmond tutu was a man of hope.