Note the date of the letter, note the content, and now note the signators. I'll show you the highlights:
Richard L. Armitage - Deputy Secretary of State
Donald Rumsfeld - Secretary of Defense
Paul Wolfowitz - Deputy Secretary of Defense
R. James Woolsey - Former Director of Central Intelligence, now private businessman and commentator on cable news talk shows
Isn't this interesting? Back when the letter was written, the three secretaries mentioned above were in the private sector (OT: Rumsfeld was allegedly an investor in Nvidia) and members of conservative think-tank groups and political action agencies. The others on the list were/are members of these groups and at one time or another held positions in the Reagan and Bush Sr. administrations. It appears that once Armitage, Rumsfeld, and Wolfowitz were sworn in, war with Iraq was inevitable. In fact, Rumsfeld and Wolfowitz suggested to President Bush (according to Bob Woodward's Bush at War) that Iraq would be a better alternative to America's first move in the War on Terrorism than Afghanistan.