"The problem is the president doesn't know any of this," retired Gen. John Kelly told Fiona Hill at the 2018 G20 summit, according to Hill's new book.

"I knew he was probably watching TV waiting for it, and I put it out, and it's one of my biggest regrets," Grisham said of the 2019 statement.

"I don't know if the decision went all the way up to General Kelly, although he was the type of guy who liked top-to-bottom control," Grisham wrote.