> in case people have not noticed nations are becoming less coordinated and more insular.
And what is your yardstick for measuring this? As far as I can tell this is the opposite of true. It's a popular national news meme but I don't believe it's been measured in any reliable way.
I won't comment on the broader point about how insular countries are becoming, but on this specific topic I'd say that the international reaction to global warming, which appears to be a very similar situation, shows exactly how little action is likely to happen.
I don't know about whether it is more or less common, but there has been international drama over conjunctions over the last several years
https://spacewatch.global/2021/12/spacewatchgl-share-chinese...