Tributes pour in for Nelson MandelaTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoMartina Assuncao12/06/2013December 6, 2013US President Barack Obama, Nobel Peace Laureate Aun San Su Kyi and UN Secretary General Ban Ki-moon are among the international figures to pay tribute to Nelson Mandela.https://p.dw.com/p/1AUGEAdvertisement