The message was passed to US intelligence through several channels.

But his demand "left traces in the computer" of the US intelligence.

US intelligence soon began an intensive period of surveillance.

Do you think there is info in the memoir that US intelligence did not know?

U.S. intelligence estimates that the weapon will not be operational for another 11 years.

"U.S. intelligence operates what is probably the largest information processing environment in the world," he said.

These are often tall stories, and often based on his time in US intelligence.

US military intelligence initially estimated the number of Japanese aircraft to be around 2,500.

U.S. intelligence believes that another larger attack is planned and could come at any time.

US intelligence thus needed a long-range drone with a high degree of survivability.