(WeForum) Nation states are looking increasingly outdated and even dangerous. Some of them are outright belligerent, and threatening catastrophic war. While some nation states are exhibiting neo-imperial tendencies, most are waning in power and influence. The 369 year experiment in nation-building is coming unstuck with most nation states failing to deal with the major global challenges of our era, including climate change, forced migration, terrorism, pandemics and more.