I think that counts as a chemical weapon.

It also appears that both the Palestinian and Israeli positions are at least matters of ethnic cleansing or genocide - it you accept that Palestinians and Israelis are different races (whereas they are in fact both Semites divided by politics and religion).

The fact remains that no-one had the right to give part of the Eastern Mediterranean area to a distinct population defined by religion.

The question remains of how to solve the problem.

I am of the view that UN membership for "Palestine" might well assist.