Не знаю. Это уже целое историческое исследование. Если Вам интересно, проведите его. По-моему, о желании отцов-основателей Израиля очистить землю от арабов писали многие историки. Вот, например, Benny Morris:
Almost every instance—the exodus from Haifa (April 21–May 1), from
Jaffa (late April–early May), from Tiberias (April 17–18), from Safad (May 10)—was
the direct and immediate result of an attack on and conquest of Arab neighborhoods
and towns. . . . In no case did a population abandon its homes before an [Haganah]
attack; in almost all cases it did so on the very day of the attack and in the days im-
mediately following.” Morris, Righteous Victims, 255. In early May, before the decla-
ration of Israeli statehood, the Arab states cautioned the Palestinians to stay put, or,
if already left, pressured them to return to their homes (256) | 
