Ethnic cleansing was not a consequence of war. It was the reason for the war.
The Zionists wanted a majority Jewish state where the Jews were only 1/3 of the population. That meant that a lot of Palestinians had to go. There was no other option.
As Coyote also said -- it worked both ways. Both Jewish nationalists and Arab nationalists wanted (needed, need) a homogeneous enough population to bring about a national self-determination. And both groups created "facts on the ground" by using military strength to rid the territory they controlled of the "enemy" population. That is what the war was.
After WWI and WWII, when the time of large Empires came to an end, smaller, tribal-based nationalities became the norm. An exchange of population as a consequence of distinct, smaller nationalisms was quite normal for the times and even fifty years later -- see examples such as Yugoslavia. In fact, there are numbers in the millions of peoples who were transferred. It was common. (And, in nearly every case, it actually solved the problem).
But it is an error to claim that it was (is) only one side which wanted (needed, wants, needs) a relatively homogeneous population. Let alone that only one side managed to accomplish such a thing! If we compare the two sides we see that the Arabs were FAR more successful in their removal of Jews throughout the Arab world than the Jews were in removal of Arabs on the tiny slice that is now Israel or on the slightly larger slice which should have been the Jewish National Homeland. Whether that is a result of incompetence on the part of the Jewish people (unlikely) or a lack of will is of no consequence except on silly forums like this one.
The point being that there is no moral equivalence between an EQUAL requirement for a homogeneous population and the military will and power to create such a reality in war and the deliberate, systematic extermination of a peoples.
How can you compare the rights of the people inhabiting a territory with the rights of the people living on another continent planning to colonize the territory? Don't you realize it's an altogether crazy concept?
Inhabiting an area (squatting the land), doesn't entitle ownership.
You should eventually realize that the geographic area you falsely believe to be your invented "Magical Kingdom ofDisneyPally'land" was controlled by the Ottoman's who released all rights and title to the Mandatory.
The Palestinians aren't squatters.
