...both have been unable to co-exist since the time Abraham. Many jews left the land hundreds of years of ago and settled other places. The arabs stayed there and lawfully aquired the extra land that was being left.
fast forward to World War 2...Jews were of course displaced and many were reclaiming their roots. The UN for the most part supported an israeli state , but in order to establish one many Arabs would have to be pushed out of their homes that they had occupied for generations...so that plus general dislike for each other has again produced constant fighting for what both claim is there homeland. They are also both fighting for preservation of their holy places which are in Jerusalem.
I know I tend to be on the arab side because I am muslim, but I try to to remain as possible. It is a little upsetting to me that Israel has sanctioned "archaeological" digs underneath a mosque that is sacred to muslims because it is where Muhummed recieved revelation and journied to the heavens.
But those a re decent links, I'm going to check them out too.