I think there is alot of singapiore history that has been
concealed, either deliberately or inadvertantly.
I just read a book in the library published in the 1970s. The
author writes about a CIA agent who was caught trying to bribe a
Singapore Official during the 1950/60s. Trap was set and the guy
was caught. I think LKY managed to get something from the US out of
that. Not sure though.