Reviewing 40 years of hard, empirical data, from China and India to Chile and Iraq, the authors show that poor democracies beat poor autocracies in every economic measure. In addition, the authors offer dramatic evidence that democracies are less likely to fight each other and that terrorists more often find safe haven in authoritarian countries such as Egypt, Saudi Arabia, and Pakistan.
From Wikipedia: Morton H. Halperin (born June 13, 1938) is an American expert on foreign policy and civil liberties. He served in the Johnson, Nixon, and Clinton administrations and in a number of roles with think tanks and universities such as the Council on Foreign Relations and Harvard University. He is currently Senior Advisor for the Open Society Institute, founded by George Soros.