Weidner says Kubrick was given a "deal with the devil" in 1962 after the Pentagon saw Dr. Strangelove.
He could not refuse. Once the deal was offered, it was his death sentence.
He was given an unlimited budget for 2001, and latitude and money to make any films he wanted for the rest of his life, if he would shoot the "moon landings. "
The two projects were shot concurrently at Pinewood Studios in England.