Another is to provide a forum or deliberative body to assess the many supernational problems, such as world population and the preservation or management of the terrestrial environment, which if left to the individual nations would in all likelihood receive scant attention. We already have in our history the needed guidelines. We have seen how wars between city states become irrelevant when they join small nations and how the enmities between small nations can be successfully mitigated when small nations join together in larger nations. The history of governments provides guidelines for the structural requirements of the needed world government including the necessary parts such as executive, legislative, and judicial as well as the principle of checks and balances. Many people of a libertarian turn of mind have an automatic horror of the word government.
Government can indeed be most troublesome and the source of many evils.
Constructing a manageable government which will not run out of control is perhaps analogous to constructing a rocket that doesn't explode. We should not blind ourselves to the necessary functions of government just because we have an acute sensitivity to the possible ways in which government can go wrong. Never before in the history of the world has it been possible for virtually any two people on the planet to converse with each other at will. Even the language barrier has been significantly reduced by services such as Systran . Using this service you can compose a message in your own native language and send it to the other person in his native language.