Christopher Balding, an associate professor at Peking University, claims in this note that
Given publicly available economic data on Singaporean finances, there is an expected asset gap of more than $800 billion SGD unaccounted for from historical surpluses and financing operations when factoring in claimed interest.
Here is the accompanying Excel spreadsheet with the data. Here are Balding's blog posts on Singapore.
To my knowledge, these claims of his have received no coverage by the state-controlled media in Singapore. And I can find no serious, in-depth discussion anywhere of the merits and flaws of Balding's claims. So are his claims correct?
Note that S$800b is about 200% of Singapore's annual GDP. In comparison, 200% of US GDP would be US$36 trillion.