1917: Britain says 'Hey, you know, the Jewish people really need a country they can call their own. How about...here!'
Arab people already living there says 'Wut?'
1947: The U.N. says 'Hey, let's make the area into 2 states, one for Jews, one for Arabs. That way everybody's happy!'
All the neighboring Arab nations and the Arab people in the area involved say 'Um, no.'
1948: Israel says 'Screw you Britain, we don't need ya! Also, let's call ourselves Israel. Cool, huh?'
U.S. says 'Yeah, sounds groovy.'
Civil war breaks out immediately between the Jewish and Arab states, and all the neighboring Arab states attack.
1949: ceasefire agreement reached.
1964-1967 The War over Water: Israel says to Syria and Lebanon 'That stuff you're drinking--mine!'.
1967: Israel says 'That land you're standing on--mine!' and occupies the West Bank and Gaza Strip to this day, in violation of international law and against U.N. decree.
Around this time, the U.S. decides that if war breaks out in the region, it's going to end up being us versus the Soviets, so let's give Israel lots of money and arms. 'That will make us safe from attack! Oh, and how sad that there's conflict in this region. So sad. :
: I have no idea why suddenly the Arab nations don't like us anymore. Let's arrange some nifty peace talks.'
And pretty much more of the same to present day.
And everyone lived happily ever after!