Warnings: Finding Cassandras to Stop Catastrophes is a book published by HarperCollins Ecco and written by former United States intelligence and counterterrorism official Richard A. Clarke, and former White House National Security Council Director, and U.S. and UN senior diplomat R. P.

[2] The authors cover seven case studies in which data driven, proven, credible experts specifically warned of a pending catastrophe, were ignored by the decision makers, and the disaster subsequently struck just as predicted.

The concluding chapter describes how individuals and organizations can employ the Cassandra Coefficient, hedging and "sentinel intelligence," to watch potential disasters so as to not be surprised by them, and expend the necessary remediative resources only when necessary.

[11] The book enjoyed positive reviews in The Washington Times,[12] Insider Hook (formerly Real Clear Life),[13] Kirkus,[14] and on Good Morning America.

[16] In her book What Happened and subsequent interviews, Hillary Clinton referred to Warnings and noted the value the Cassandra Theory could have had to encourage decision makers to take the Russian hacking threat in the 2016 U.S. presidential election more seriously.