Zimbabwe’s suitability as a venue for next month’s World Cup was in the spotlight again after a 27-year-old Australian tourist was stabbed to death at the country’s prime tourist destination, the Victoria Falls.The Australian, whose name has yet to be released, had his death confirmed by Zimbabwe authorities yesterday.He was attacked as he came out of the rain forest at the waterfall on Saturday, the police chief in Victoria Falls, Alexio Paradzai, said. Both Australian Prime Minister John Howard and his British counterpart Tony Blair have called on their respective teams to pull out of their matches in Zimbabwe in protest at the policies of its President Robert Mugabe.