For me personally it would be Britain, Canada, Israel, Germany, and India...with Mexico, UN, Russia, France, China, Saudi Arabia, Iraq, Syria, the "Palestinian government", Cuba, Iran, and North Korea all tied for dead last.
And it is ridiculous that Australia and Poland are not mentioned.
There's the answer to your questions. The university limited the number of countries. Still, I don't understand why they wouldn't include Australian and Poland, and a few other countries, to make it a top 20 list.