Taiwan, China and sanctions., page-20

The USA recognises Taiwan as part of China.
https://www.state.gov/u-s-relations-with-taiwan/
This means nothing of course as any agreement with the USA is only at the whim of the current administration.
Back to Ukraine
Anyone that believes that the USA would not sacrifice Australia to achieve world hegonomy is delusional.
This may happen as a spinoff to the Ukraine issue or as a result of the continuing Taiwan agitation.
Which ever trigger is the cause the result will inevitably be pain for Australia. ( read FMG and SWIFT ) The degree of pain will depend on whether or not China rolls over,
There will be no war
The USA does not attack nuclear armed nations.
Australia is the obvious useful idiot.in an ecomnomic war.