The situation is a fair bit different with Taiwan.
Firstly "In April 2001, George W. Bush publicly announced the American defense of Taiwan"..."This framework was approved by President Donald Trump in 2018" (wikipedia)
Secondly there's a sea in between China and Taiwan meaning it could largely be defended by a no fly zone. In Ukraine once Russia troops have crossed the border it isn't easy to get rid of them without a lot of messy ground warfare.
Firstly "In April 2001, George W. Bush publicly announced the American defense of Taiwan"..."This framework was approved by President Donald Trump in 2018" (wikipedia)
Secondly there's a sea in between China and Taiwan meaning it could largely be defended by a no fly zone. In Ukraine once Russia troops have crossed the border it isn't easy to get rid of them without a lot of messy ground warfare.