Australian government officials can continue to 'make suggestions' to singapore to their hearts content, their efforts will almost certainly be fruitless.
'suggestions' from australia or even a formal australian gov request to take the matter to the intl. court of justice will be of little use because;
as it stands, the singaporean government feels it is entirely capable delivering a punishment relative to his crime that is historically fair by singaporean standards.
unless this opinion of theirs changes and they feel that they're incapable of determining his fate, we most likely have no hope of affecting their decision or meeting them at the intl. court.

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Julian
05 STi