And then there's potential escalation between North/South Korea, with South Korea wanting to pause their military agreement with NK.
If that happens, there will be no more buffer zones and no-fly zones. There will be military build-up on both sides. There will be military provocations. And potentially another hot-zone for US to sponsor.
Ukraine will keep moving down the list of US-priorities.

Hamas' attack on Israel prompts South Korea to consider pausing military agreement with North Korea

https://abcnews.go.com/International/wireStory/hamas-attack-israel-prompts-south-korea-pausing-military-103850681