Far from being a response to 9/11 terrorism or Iraq's alleged weapons of mass destruction, Petrodollar Warfare argues that the invasion was precipitated by two converging phenomena: the imminent peak in global oil production and the ascendance of the euro currency. Clark examines US dollar hegemony and the unsustainable macroeconomics of petrodollar recycling, pointing out that the issues underlying the Iraq war also apply to geostrategic tensions between the United States and other countries, including the member states of the European Union, Iran, Venezuela and Russia.