I don't know how much of the claim that those countries are more "altruistic" than China is true. For the sake of argument, let's assume it is true. I ask you

I don't know how much of the claim that those countries are more "altruistic" than China is true. For the sake of argument, let's assume it is true. I ask you this: must a country be "altruistic"? Is it wrong for a country to look after its own interest? Clearly, if there interest conflicts with yours, then there is a problem -- but that is a problem regardless of whether they are normally altruistic. But as long as their interests don't conflict with yours, is it wrong to be "selfish" (or a more charitable interpretation: "to mind one's own business")? And even if a country helps another not for altruistic reasons, but because there is something to gain, then is there anything wrong with that? Isn't that also called a win-win? Donating and being altruistic is a neutral-win, but couldn't one argue that win-win deals are more sustainable?