Its a new term called as controlled proliferation.
Taiwan is beneficiary of USA nuclear umbrella so there is no need to possess that liability. But in case if USA will leave the yellow sea Taiwan will definitely spread the news that she is self capable of deterring nuclear China, thanks to USA.
Sorry you still don't seem to understand, by spreading the news of a nuclear deterrence, which can only mean a WMD of its own, Taiwan will force a Chinese invasion, as Chinese law REQUIRES such.
Why would Taiwan need a nuclear deterrence? I don't think any Taiwanese seriously think China will launch a nuclear attack on the island, just as most South Koreans ain't bothered by the North's nuclear program.
u accept the fact or not,U.S is standing stronger inside south east and with it's presence most of the nation's have just started to smell the blood
u can deny this by statements like south east fear to go against China,U.S will fall here,no one can mess with us,but the ground reality as per what the world have seen in the concluding months show something else
Why some South East Asian countries want a stronger U.S role in the region? Because U.S is a known factor who has been there for over 60 years. Why they're afraid of China? Because a Chinese naval supremacy is a unknown factor. Nobody can be sure how will a militarily strong China act, not even Chinese themselves.
Now let's compare this to a potential nuclear Vietnam, which is an even bigger and far more destabilizing unknown factor. People sometimes assume South East Asia acts as a single actor, it doesn't.
Vietnam has territorial disputes with Cambodia, Malaysia, Thailand, Philippines and Brunei, so in fact Vietnam has more disputes with Southeast Asian neighbors than China has. A nuclear Vietnam will make Cambodia go nuclear (with Chinese help perhaps), which in turn will make Thailand go nuclear. In turn Malaysia and Indonesia will feel the need to go nuclear too, which will guarantee Singapore develop its own nukes.
The moment the U.S is seen as encouraging Vietnam to go nuclear, it will be seen as a unknown destabilizing factor instead of a known stabilizing factor and will push relatively neutral countries in ASEAN against America.
South East Asia's fear of a rising China is not because of ideological differences nor potential conflict in the near future. Their fears stem from an uneasiness over future uncertainties. But a militarily strong China is less of an unknown than a nuclear Vietnam and the prospect of a dominant Chinese navy is a less evil comparing to a nuclear armed neighborhood. No every country in South East Asia has a territorial disputes with China but everyone will suffer if the neighborhood goes nuclear.
Anyway, all above is just hypothetical as the U.S will not arm Vietnam. But it would be in China's interests to make other South East Asian countries to believe that's the American intention, perhaps Chinese diplomats has already began working on that as we write.