Mugabe asks interviewer: Do you want me to punch you to the floor?

Zimbabwean President Robert Mugabe has challenged a TV interviewer when quizzed about any retirement plans, asking him: "Do you want me to punch you to the floor to realise I am still there?"

The 92-year-old, known for his pugnacious comments, was responding to an interviewer from state TV after a question about who would succeed him.