In 1917 the Balfour report recommended a shared homeland in Palestine for Jews and Arabs.  The Jews gratefully accepted it - the Arabs rejected it.

In the 1930's the British and the League of Nations recommended a two state solution for Palestine west of the Jordan.  The Arabs rejected any thoughts of that and rioted off and on for years whenever the option of a two state solution was raised.

During WWII the Cheif Mufti of Jerusalem, (sort of an Ayatollah), allied with Hitler and called for the extermination of Jews in the Holy Land. 

In 1948 the United Nations recommended a two state division of Palestine into Arab and Jewish states leaving Jerusalem the most holy city in Judaism outside either's jurisdiction.  The Jews accepted.  the Arabs proclaimed war and Israel gained about 20% more territory including West Jerusalem.

While Jordan ran the West Bank it was made 'Juden Frei' and the Jewish Holy sites were desecrated and synagogues were used as stables. 

TBC