Various political ideologies
World peace is sometimes claimed to be the inevitable result of a certain political ideology. According to former U.S. President George W. Bush: "The march of democracy will lead to world peace." Leon Trotsky, a Marxist theorist, assumed that the world revolution would lead to a communist world peace.
The Democratic peace theory
Proponents of the controversial democratic peace theory claim that strong empirical evidence exists that democracies never or rarely wage war against each other. (the only exceptions being the Cod Wars, the Turbot War and Operation Fork) Jack Levy (1988) made an oft-quoted assertion that the theory is "as close as anything we have to an empirical law in international relations". An increasing number of nations have become democratic since the Industrial Revolution. A world peace may thus become possible if this trend continues and if the democratic peace theory is correct. There are, however, several possible exceptions to this theory.
Capitalism peace theory
In her "capitalism peace theory," Ayn Rand holds that the major wars of history were started by the more controlled economies of the time against the freer ones and that capitalism gave mankind the longest period of peace in history—a period during which there were no wars, involving the entire civilized world—from the end of the Napoleonic wars in 1815 to the outbreak of World War I in 1914. It must be remembered that the political systems of the nineteenth century were not pure capitalism, but mixed economies. The element of capitalism, however, was dominant; it was as close to a century of capitalism as mankind has come. But the element of statism kept growing throughout the nineteenth century, and by the time it blasted the world in 1914, the governments involved were dominated by statist policies. However, this theory ignores the brutal colonial wars waged by the western nations against countries outside Europe; as well as the German and Italian Wars of Unification, the Franco-Prussian war, and other conflicts in Europe.
Some proponents[who?] of Cobdenism claim that by removing tariffs and creating international free trade, wars would become impossible, because free trade prevents a nation from becoming self-sufficient, which is a requirement for long wars. For example, if one country produces firearms and another produces ammunition, the two could not fight each other, because the former would be unable to procure ammunition and the latter would be unable to obtain weapons. Critics[who?] argue that free trade does not prevent a nation from establishing some sort of emergency plan to become temporarily...