The announcement that President Obama won the Nobel Peace Prize has inspired a new wave of history-seekers to look into the prize. Who's won and who hasn't? Conservatives have long criticized the award for not recognizing Ronald Reagan, seen by some as instrumental in bringing down communism in Russia.
In this slideshow, we're looking at those who made a great impact on the world, but were never honored with a Nobel Peace Prize. Which of these inspirational leaders should have won? (Special thanks to Foreign Policy magazine for some on this list.)