In the age of globalization and with increased interdependence in the world today, there is a question we may have to raise: Do we need, and could we attain, a world government capable of ensuring peace and facilitating worldwide well-being in a just and efficient way?

There are obvious and strong arguments in favour of viable and sustainable world governance, even for a unified world state. Two of them seem to be especially strong: security, which is becoming more and more a matter of joint concern; and sustainability, which is increasingly visible in issues such as climate change,...