I think geopolitically, if the US were to intervene in a major way (let's say they kill everyone in Gaza) that the rest of the world would do nothing. Russia has no meaningful power beyond some nukes and they aren't going to risk that over Gaza, because they hate Muslims. China has no meaningful way to project power globally and never fought a meaningful war.

I think the only reason the US doesn't do that, is because they want to have an eternal state of conflict, because that means they get to keep their military bases and it protects the status quo.

Do you think something major would happen if the US were to intervene in a major way? I think just a bunch of people hated by most of the world would just die and that would be the end of it. It's tragic on an individual level, of course and probably 99% didn't deserve that or whatever, but really, who is actually going to do anything about it?

I have the impression the US is so far ahead of the other nations militarily that any comparison is just a sick joke. China has lots of propaganda about how their military has some significance, but I just don't buy any of it. In the US there has been a gun culture for a really long time. That kind of enthusiasm ends up in the military branch. You can't buy the creativity that comes from that. China doesn't have that and it will likely never know freedom, so their weapons will also remain bad.

The US would have to invest in enough ammo to kill every man, woman and child in China, if that ever happens, but unless they don't run out of ammo, I just don't see the US losing a conventional war against China. Perhaps tactically deployed nukes (like smuggling them to US ports, etc. and detonating them as a kind of Pearl Harbor) would be a good first strike option for China, but otherwise I don't even see anything ever hitting American land.