You have posted this many times but you have always ducked the question about where Israel got the authority to claim Palestine's borders.
No we haven't ducked the question. Again...Israel has the authority to claim borders because she is a STATE. She (long ago) met the requirements for being a state and has been recognized as a state in the international community. One of the most important qualifications for being a state is the ability to create treaties with other states. Such as the treaties Israel has with Jordan and Egypt.
The reason "Palestine" (whatever you mean by that) does not have borders is that it currently does not meet the criteria for being a state. Until such time as it does, it can not, by definition, have borders.