The fact that you think this is a strong counter-argument is a bit telling. War is different from the other things here, because it's not something a nationsta

The fact that you think this is a strong counter-argument is a bit telling. War is different from the other things here, because it's not something a nationstate can unilaterally solve. But I don't think anyone disagrees that well-developed societies should strive to implement mechanisms that avoid war. But hunger, universal healthcare, reduction of homelessness to a minimum and adequate social safety nets are all universally agreed-on goals for developed societies. And if you look outside the US you will find 50+ countries that are actually achieving these things. You may take the Wikipedia list of countries with universal healthcare as a starting point.