Honestly the Israel & Palestine situation is a complex version of 2 little kids not wanting to share their sandbox with each other. Each of them saying it was mine first when they could easily divide it equally. Unfortunately one of them has the sandbox bully on their side so the other boy has no chance.
Not as simple as that. The Israelis are having USA on their side, but Barack Obama is not as much pro-Israeli as his predecessors. On the other hand, emerging powers such as Saudi Arabia and Egypt are supporting the Palestinians.