In a sworn affidavit, Dr Vivienne Thom, Inspector-General of Intelligence and Security, stated that so sensitive were its contents that disclosure to Schapelle Corby would risk the future "flow of intelligence and threat warnings" to Australia, which could adversely "impact on the ability of the Australian agencies to warn the Australian government of potential threats to Australian national security".
The document is known to relate to engagement with the United States of America. For further inforamtion, see the exhibit: The CIA And The Schapelle Corby Case.
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