President Trump called veteran reporter Bob Woodward's new book "total fiction" in remarks from the White House on Wednesday. 

At a meeting with the emir of Kuwait, Trump took questions from reporters, who asked about Woodward's book, "Fear: Trump in the White House."

An early copy of the book was reported on Tuesday by The Washington Post, portraying a chaotic Trump White House in which the president is bad-mouthed by members of his staff.

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According to The Post, the book alleges that Defense Secretary Jim Mattis told associates of the president that he had the understanding of “a fifth- or sixth-grader.” After Syrian dictator Bashar al-Assad launched a chemical attack on Syrians in April 2017, Trump is said to have demanded Mattis launch an assassination attempt.

Responding to the allegation Wednesday, Trump said that was "never discussed." Trump accused Woodward of writing false and "scandalous" things about other presidents, including George W. Bush and Barack Obama. 

"The book is total fiction," he said. 

Trump said Mattis was "insulted" by what was written about him and came out with a "very strong statement" denying he made the comments. 

The president said his chief of staff John Kelly was also "insulted" by Woodward claiming he had described his boss as an "idiot."

Watch his remarks above. 

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