Dignified Rant has an interesting new post on the topic. Needing and wanting can entail all sorts of definitions and motivations ... though the bottom line is, as I think we've all been saying for a long time, Taiwan needs to make the price of invasion too high for China to pay.
You know, Taiwan may be losing the public relations war (if this incident is any indication of how otherwise perfectly intelligent and reasonable people will naively believe the stupidest propaganda about Taiwan). You know what? Fight the PR war better, Taiwan, but at the same, arm up in case the moment ever comes when we go past words to sticks and stones.