US is all big, its ability to wage wars oversea had long gone.US white house has cleared that Taiwan policy hasn't changed doesn't mean that US gov disagrees with Biden necessarily. Maybe it is indeed US policy always to intervene militarily in case of Taiwan crisis and it's just that US gov never intended to say that clearly in the public before, it just always says its Taiwan and China policies haven't changed all the time, but no one really knows what "Taiwan and China policies haven't changed" mean exactly.
China definitely needs fast at least 3000 nuclear warheads, many more nuclear ballistic submarines and missiles to deter US aggression on Taiwan and other issues at large. 300 plus nuclear warheads is just a token figure to US and US won't take it seriously. China just have to learn from Russia that no Mutual Assured Total Destruction of both USA and China by nuclear weapons means no peace and no sovereignty integrity for China.
Do you know which country invaded other countries most in recent history?authoritarian regimes are on warpath in order to invade their neighbors.
Joe Biden’s presidency demonstrates, once again, that U.S. commitments to militarism and permanent global war are enduring and bipartisan.