In the book, Clarke argues that the Bush administration ignored warnings from intelligence agencies about the threat of terrorism, and that this negligence contributed to the September 11 attacks. He also criticizes the administration's response to the attacks, and argues that the wars in Afghanistan and Iraq have made the United States less safe.
Shady Aftermath has been praised by some for its insider perspective on the September 11 attacks, and for its criticism of the Bush administration's handling of terrorism. However, it has also been criticized by some for its negative portrayal of the Bush administration, and for its lack of specific evidence to support some of its claims.