The people to blame are those who thought drawing arbitrary lines on the map would lead to a legitimate geographical claim to territory. Whether we're talking about Northern Ireland, the Middle East, Africa, or Ukraine, politicians and map makers have never been able to impose their will on the local population without the aid of dictators and/or large amounts of money.
In the case of Israel, nothing will change until the USA tires of subsidising a 52nd State. Only then will everyone be forces to sit around a table and properly debate a solution to the damage done when Israel was created out of thin air.
So this miserable farce will continue indefinitely... or at least until the Iraq mess sets fire to the whole region. More dabbling, more mistakes, more pointless typing into the black hole of internet debate.