With the US being now engaging her Navy in South America more, I am not so sure that America can really match a Blitzkrieg-style invasion, and it is probably not quite able to project enough soft power to get the 'vassal states' to effectively help.

So while I am by no means pro-Taiwan invasion, I do believe that there is a very significant downside wrt China with this move.

N.B. I'm no military wonk or political strategist, far from it. I just call 'em as i see's 'em.