Robert Mugabe's decision to sack his deputy Emmerson Mnangagwa prompted the army to intervene in Zimbabwe's politics last week.

His dismissal seemed to clear the path for former First Lady Grace Mugabe to succeed her husband as she was on course to be appointed vice-president.

However, opposition MP Priscilla Mushonga told the BBC's Newshour programme that blaming Mrs Mugabe for the crisis merely let Mr Mugabe off the hook:

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