Singapore's President SR Nathan and his wife look at the roof of the Tomb of the Unknown Soldier at the Australian War Memorial in Canberra. Singapore's President S.R.Nathan and his wife, Mrs Urmila Nathan, look at the roof of the Tomb of the Unknown Soldier at the Australian War Memorial in Canberra March 15, 2005. President Nathan is on a five-day official visit to Australia and will meet Prime Minister John Howard and other ministers in Canberra before flying to Hobart and Perth. REUTERS/David Gray