Stamers conditions are more complicated than that. Most are in the article i linked. Hes demanding a two state solution and a lot of concessions from Israel when they are likely to meet none of them.
The UK has basically committed to recognizing Palenstine as a state.
The supreme court cooked these books in 2000. Gore won then, but since he conceded and pushed for the wrong Florida recount, the 5-4 GOP supreme court ruled that Bush was the lawful president.
Now the supreme court is 6-3 GOP, with most of the same conservatives, and Harris conceded much larger margins than Gore, it literally wont change anything.