The scope and details were, in fact, a secret: https://www.bloomberg.com/news/features/2016-05-30/the-untold-story-behind-saudi-arabia-s-41-year-u-s-debt-secret

The scope and details were, in fact, a secret: https://www.bloomberg.com/news/features/2016-05-30/the-untold-story-behind-saudi-arabia-s-41-year-u-s-debt-secret https://www.bloomberg.com/news/features/2016-05-30/the-untol...