You have a little feedback loop here because if you optimize only at a global scale and ignore local scale, you could create unstable local scale systems which

You have a little feedback loop here because if you optimize only at a global scale and ignore local scale, you could create unstable local scale systems which destablize the global system as well. Hence the many current failures of neoliberalism. And of course, as you point out, if you only optimize on the local scale and ignore the global scale, you'll also create an unstable system. Hence the failures of extreme nationalism we've seen historically. Both cases can lead to instability because of their relationship to one another (the global system is composed of localized systems). You need to look at balance across the entire picture, which means you can't just ignore your own country and its people but you also can't ignore the rest of the world, either. It's tough trying to create a good stable global system that isn't disenfranchizing some large segment of the population.