Are We Still Committed to the One China Policy?

The united states had made pretty clear, has wen talked about over decades, that it was not going to admit ukraine intonata and make a guarantee to come to the defence of ukraine. So for the united states to exceed that red line would at least raise a question in bejing about whether the united states truly is still committed to the one china policy. If the united states and the west were to get into all out conflict with russia, i would actually be more worried about stability across the tian strait. Are you really sure you want to have a great power war with nuclear peer to the united states? Nobody really thought that the stakes were there