Part of the reason for invading Iraq (and maintaining a huge military presence in the Middle East) is oil, as we all know. The importance of oil is made clear in the PNAC document and the same theme appears even earlier in the book "The Grand Chessboard". Securing oil is central to the PNAC vision and requires strategy and policy to be formulated at the very highest level; it's an issue of crucial importance to US geopolitical strategy. We know that Cheney was THE pivotal figure at the National Energy Policy Development Group and it followed on from the publication of the PNAC document, unless I have my dates wrong.
My gut feeling is that Cheney is the biggest fish (reptile maybe, I've never gotten close enough to be sure) who is in the public eye.
Here are some pointers as to just how influential he has been>>>
http://www.sourcewatch.org/index.php?title=Richard_Cheney<snip>
championed Donald Rumsfeld for Defense Secretary
"insisted, over fierce objections by Secretary of State Colin L. Powell, on placing Paul Wolfowitz in the number two position at the Pentagon"
"insisted, again over Powell's misgivings, on making ultra-unilateralist John Bolton, then vice-president of the American Enterprise Institute (AEI), undersecretary of state for arms control and international security.
"reportedly played a key role in the appointment of another controversial neo-conservative, Elliott Abrams, to head the Middle East office on the National Security Council."
"reportedly visited the headquarters of the Central Intelligence Agency (CIA) several times in the run-up to the war in Iraq, in what was seen as pressure on CIA analysts to take a darker view of Saddam Hussein's alleged ties to al Qaeda and weapons of mass destruction."
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