Chalmers Johnson.
The Sorrows of Empire: Militarism, Secrecy, and the End of the Republic.
New York: Metropolitan / Owl Book, Henry Holt and Co., 2005.
(Originally published: New York: Metropolitan Books, 2004.)

Book information: publisher, Amazon.com.

Militarism and the American Empire, Conversations with History, 29 January 2004.
Johnson discusses The Sorrows of Empire; an excellent introduction to the book.

The Last Days of the American Republic: A Conversation with Chalmers Johnson, Conversations with History, 07 March 2007.
Johnson discusses his most recent book, Nemesis: The Last Days of the American Republic.

I provided additional links regarding Chalmers Johnson and The Sorrows of Empire here, 17 April 2007.