Washington, June 29 (RHC)-- Two key players and advocates of the U.S. war on Iraq will teach a course on decision-making during the invasion of the country under former U.S. President George W. Bush.

According to reports from Washington, Paul Wolfowitz and Scooter Libby, who played important roles during the war, will teach a week-long course, titled "The War in Iraq: A Study in Decision-Making."

The course will explore some "key strategic decisions" made during the invasion, according to a description by the Hertog Foundation in Washington, DC. Wolfowitz served as deputy defense secretary between 2001 and 2005 and Libby served as national security adviser to then vice president Dick Cheney and Bush during that time.

The decision to invade Iraq was one of the most controversial decisions by Bush, which was made under the pretext of removing Saddam Hussein, who Washington claimed possessed weapons of mass destruction. In October 2004, however, a CIA report revealed that Saddam did not have any active WMD program at the time of the invasion.

The war of aggression against Iraq resulted in a more catastrophic situation and the country became the target of extremist groups including al-Qaeda and later ISIL.

About one million people were killed in Iraq during the course of the U.S.-led invasion and occupation of the country from 2003 until 2011. The war has cost American taxpayers $1.7 trillion, with an additional $490 billion in benefits owed to war veterans. The expenses could grow to more than $6 trillion over the next forty years counting interest, according to a study called Costs of War Project by the Watson Institute for International Studies at Brown University.