A universe that respects the right of the people who live somewhere to chose the government they want? We've all seen the protestors waving British flags there.
Abolishing the right of conquest in the early 20th century was one of the great achievements of humanity, and that is not diminished by the impossibility of making it retroactive.
> If you think they aren't sufficiently butthurt about it, I'd counter that by saying "what can they realistically do about it?" The answer is "absolutely nothing." You want them to invade or something?
> They can write a nastygram or something but any of the promises involved with the transfer really mean nothing.
There's a whole spectrum of diplomatic measures the UK could do short of all-out war. Trade restrictions. Hell, full diplomatic recognition of Taiwan is a great option.