In the current debate about globalization, its supporters praise its benefits for the economy and for peace while its opponents express their skepticism about its serious consequences for solidarity and democracy in our societies. Yet, the decisive point is already the path towards a global world order as well as the justification of this way. How can globalization of political institutions be conceived of, if it is to comply with the principle of democracy and the rule of law? This volume addresses three central dimensions of this problem: (i) the ethics of international negotiations and agreements; (ii) the question whether global public debate and deliberation might gradually arise; (iii) the issue of the way in which the principles of federalism and subsidiarity could be applied to global political institutions.