Even if the Israeli government will not cooperate, there are other avenues to obtain relevant information regarding the incidents you are investigating.
Everyone knows what will happen to a person in Gaza who speaks against Hamas. In addition, the shameless, almost pathological, mendacity of Hamas (and other Palestinian spokespersons) has been exposed over and over again.
I have heard you will be taking submissions of “evidence” by private telephone call.
It is impossible to understand what is happening on the region without reference to Hamas’ charter calling for the destruction of the State of Israel and the elimination of the Jewish people.
As you well know, the legal concept of proportionality does not involve a simplistic BBC/New York Times-style body count,
“A crime occurs if there is an intentional attack directed against civilians…or an attack is launched on a military objective in the knowledge that the incidental civilian injuries would be clearly excessive in relation to the anticipated military advantage.” Luis Moreno-Ocampo, former Chief Prosecutor of the International Criminal Court