All of this spending will need to be financed by adding to the federal debt. Extra interest payments will total $200 billion or more even if the borrowing is repaid quickly. Conflict in the Middle East has also played a part in doubling the price of oil from $30 a barrel just prior to the invasion of Iraq in March 2003 to $60 a barrel today. Each $5 increase in the price of oil reduces our national income by about $17 billion a year. Even by this simple yardstick, if the American military presence in the region lasts another five...