The modern peace movement is almost 200 years old; its origins can be traced to the period that followed the devastating wars of the Napoleonic era in Europe. In those two centuries, peace movements have had little discernible impact on world events, and what effect they have had has often been bad: the European peace and disarmament movement of the 1930s, for example, greatly facilitated Hitler’s plans for a war of revenge. For all the good they have done, those well-intentioned souls who have sought to achieve world peace through the organization of committees, the signing of petitions, the holding of rallies, and the promotion of international treaties might just as well have stayed home.
Walter Russell Mead
“Peace Out: Why Civil Society Cannot Save the World“