The problem starts with the first line.
https://www.un.org/en/genocideprevention/genocide.shtml
In the present Convention, genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:
a. Killing members of the group;
b. Causing serious bodily or mental harm to members of the group;
c. Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
d. Imposing measures intended to prevent births within the group;
e. Forcibly transferring children of the group to another group.
Well, breddy sure they already killed members of an ethnic group, caused them serious bodily and mental harm, etc., but as long as they say they have no intent to destroy even in part, noone will escalate this over a handful of Arabs.
>There is nowhere for Palestinians to go, also, they shouldn’t have to leave their land
This is reasonable ofc.
>Iran sends a biological weapon to Israel, devastating the country
This could happen sometimes. But the Israelis are excellent in gathering intelligence (so I heard), they'll know about it.
>Full Middle East Muslim vs. Jew war
Nah. The situation is far complex to just split the place like that.

>WWIII