[Howard]

Tony,
You seem sceptical about the possibility of Japanese involvement. I do not usually subscribe to conspiracy theories, except for two.
First conspiracy theory I like is that the Moon landing was faked. Because we all know that the moon is simply a hologram projected by the Masons.
Second conspiracy theory I like is the HMAS Sydney sinking. I have very little doubt in my mind that the Japanese were involved in the sinking of Sydney and the truth was hidden from the public, and indeed the Australian Government, simply because the British war machine did not want to alert the U.S to Japanese movements in the pacific before Pearl Harbour.
Recommended Reading: “Somewhere Below” by John Samuels. Get it & read it, and we'll discuss it at the "Get-together"...
“Secrecy on the part of the Royal Australian Navy, and suspicions of scandal and cover up, make Sydney's story as important in Australia currently and politically as it is historically to Britain, America, Germany and Japan.”
– Extract from Somewhere Below