As far as Taiwan that is tricky. Wouldn't be surprised if they want to move on them before this administration leaves.
At present, Taiwan is a no-win situation for either side. Once that changes and China can "win," it's over for Taiwan. And there won't be much we can do to prevent it.
The best worst-case scenario for us is to replace what Taiwan near exclusively produces for us and the rest of the world now thus making Taiwan somewhat redundant. That would somewhat make Taiwan safer but it would absolutely make the rest of the world, particularly the Southwest Pacific, safer.