Biggest Military Spenders (as a percentage of GDP)
Guess the top 20 military spenders as a percentage of GDP. All data from SIPRI/wikipedia.
For some reason the SIPRI database does not include data on North Korea. If it did, North Korea would easily be #1, as their military budget is somewhere between 25% and 58% of their entire GDP, depending on which set of figures you believe.
I think this is a better way of seeing how much a country prioritizes military spending than looking at total expenditures alone. Think of countries that hate their neighbors (or hate a particular chosen people) and you'll get many of these.