This isn't blackmail. A security guarantee has value. Exactly what value is hard to say since the US is the only credible seller of such guarantees in this world order
At this point, Taiwan would be foolish to not start working on a secret nuclear bomb program. North Korea has proven its the only way to actually protect yourself.
Nuclear proliferation and subsequent war is inevitable imo.
China is being smart, it is modernising and growing amazingly fast, and Taiwan will be foolish not return to China peacefully in our lifetime.
I wouldn’t be even slightly surprised to learn they have a few MIRVs stashed away, pointed at Beijing, just in case.
Wouldn't the value of the security guarantee in this scenario be a negative one for Taiwan?