The Queen has arrived in Australia for an 11-day tour of the country. The Queen, accompanied by the Duke of Edinburgh, was greeted by well-wishers at Fairbairn military airfield near Canberra. She will open a Commonwealth summit in Perth next week, the BBC said. The royal couple will be based mainly in Canberra, Australia’s capital, but will also visit Melbourne and Brisbane. Australian Prime Minister Julia Gillard has said the country should become a republic after the Queen’s reign. However, Gillard has also said that it would be an honour to welcome the Queen and Prince Philip back to Australia.