Just months after unexpectedly finding herself in charge of the Botswanan diamond giant Debswana, Lynette Armstrong is aware that her job could be on the line. The company's two shareholders - De Beers and the government of President Mokgweetsi Masisi - are seeking to fill the post of managing director, which she has been covering in an acting capacity since the death of Albert Milton. Though she is already the favourite to land the permanent position, the renegotiating of the contract to sell the