Here is a caption from the National Security Archive:
Soon after the fighting started, the war developed into an international crisis, not least because Washington and Moscow had significant interests in the region. For both superpowers, credibility was a central consideration. And as Nixon put it, several weeks into the war, "No one is more keenly aware of the stakes: Oil and our strategic position." (Note 9) Both states had already armed their respective Arab and Israeli clients and both launched massive airlifts to sustain the battlefield strength of their allies. Although the Egyptians and Syrians suffered battlefield reverses, their resolve and a determined Israeli counter-attack kept the fighting going. Angered by the U.S. airlift, the Arab petroleum exporting states embargoed oil deliveries to the United States, thus producing a significant energy crisis. While both Moscow and Washington recognized the danger of confrontation and intermittently supported cease-fires, their political commitments made that support equivocal with destabilizing consequences. Superpower tensions over Israeli violations of the 22 October cease-fire escalated to the point where the Nixon administration staged a Defcon III nuclear alert, yet with all of the strains, détente prevented a serious clash.
You can find this document here:
http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB98/index2.htm
Here is another link:
http://www.globalpolicy.org/security/oil/irqindx.htm
And here is link where Donald Rumsfeld was shaking hands with Saddam in the 80s:
http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB82/index.htm