Can you show us where and when Israel ever declared any borders?
I would try to put it in layman's terms:
Lets say there is a sandbox in the park, and P F Tinmore is playing in the sandbox.
And then i come along, and i ask the people around "who owns this sandbox?"
The people are saying :"well mostly this kid, we call him Ottoman".
I come up to Ottoman, and tell him that i would like to play in the sandbox as well, so i ask him to sell me a portion of it.
Eventually he agrees, and i go and sit in the portion of the sandbox i just bought.
As time goes by, I by more of the sandbox from Ottoman and other people who apparently own portions of the sandbox.
I buy more and more portions of the sandbox ,friction between me and P F Tinmore rises.
The responsible adults who are standing around the sandbox agree that they should partion the sandbox to me and P F Tinmore in order to achieve peaceful resolution.
So they draw a line in the sand , saying this will be P F Tinmore part , and This will me my part.
I agreed , P F Tinmore does not.
The day after , P F Tinmore came along with some high school friends of his lets call them Jordan , Syria , Egypt and Lebanon.
And all of them started fighting me, as we fought we grew tiered and neither one of us wanted to proceed , so i asked his friend Lebanon , do you want to stop fighting? "Yes" he replied. "Alright" I said , but only if you don't cross this line, and he agreed.
Same thing happened with his other friends.
Those lines define the portion of the sandbox witch is mine as i have successfully defended it from people who tried to kick me out of it.