Irons, Peter. War powers: how the imperial presidency hijacked the constitution. New York: Metropolitan Books, 2005. ISBN 0-8050-7593-3.

Over the history of the United States, the executive branch of government has gradually taken the power to initiate wars away from the legislative, so that now the president can attack other countries on any pretext, for any length of time, without the permission of Congress and indeed in defiance of its acts. Irons painstakingly describes the steps down the slippery slope from the intentions of the framers of the constitution down to today's military tyranny.