I may be a little fuzzy on my history, but IIRC, land was promised to both Israel and Palestine by Britain after WWI (I think it was WWI) but the only reason Israel got the land was because Europe sympathized the Jews after WWII. Therefore, it is my belief that there should be a two-state solution though peaceful means.
You are fuzzy.
Problem is, that in addition to the Arabs who want to extinguish the State of Israel, there are also Zionists who want to implement the original version of the two-state solution in which British Palestine was divided into an Arab Transjordan and a Jewish Cisjordan.
This is a side effect of the promises the Allies made to everyone while trying to win the Great War. They made all sort of promises, a few of which they even kept.