Here is a map of the World with each country resized to reflect its net exports of crude oil. The big giant green blob is of course Saudi Arabia. One expects the Persian Gulf to be huge but its surprising to see how big Norway and Britain are, or for that matter Africa. See if you can name all the countries.
And here is one by military spending. The United States accounts for as much as the rest of the World combined.
These are both from WorldMapper. Check it out for more awesome maps.