"Now you have people in Washington who have no interest in the country at all. They're interested in their companies, their corporations grabbing Caspian oil"

Gore Vidal's quote is a criticism of the present state of politics in Washington. He is suggesting that individuals in power are more interested in their own interests than with the interests of the country. He particularly mentions Caspian oil, which is a recommendation to the oil reserves in the Caspian Sea area. This is a region that has actually been the topic of much political and economic contention, and Vidal is recommending that the people in Washington are more interested in making use of the resources of the area for their own gain than in looking out for the best interests of the nation. He is implying that individuals in power are more concerned with their own financial gain than with the well-being of the nation.