Desmond Tutu: I would like the option of 'dignified assisted death'

Nobel laureate Desmond Tutu shed tears of gratitude on his 85th birthday as he presided over a cathedral mass despite his poor health, after saying he would like the option of a "dignified assisted death" when the time comes.

The former archbishop was taken into St George's Cathedral, Cape Town, in a wheelchair and was later helped to his feet in church robes, a crucifix around his neck, for the Anglican ceremony.