I for one am going through quite a culture shock. I always assumed the nature of FOSS software made it immune to be confined within the policies of nations; I guess if one day the government of USA starts to think that its a security concers for china to use and contribute to core opensource software created by its citizens or based in their boundaries, they might strongarm FOSS communities and projects to make their software exclude them in someway or worse declare GPL software a threat to national security.
I get that it's a nice daydream to think of open source projects as existing in some kind of independent, ethereal vacuum just because the code is out there and accessible from any place on Earth. But every software project is (mostly?) dependent on the jurisdiction in one country, in this case it's the US, and so their laws about sanctions and so on apply. And yes, this means that unless conflicts/wars between nations happen to cease, that we will eventually have completely separated blocks of politics/culture/military and also IT. Globalization is over. China will have their own stuff, Russia will have their own stuff, and US+EU will have their own stuff. And none of those countries should continue using high-tech products made by the other because they could be sabotaged and it might be hard to find, so it's best to not use them at all and just cook your own stuff. It's unfortunate, but bound to happen in the current state of the political world.