Sort:  

Isn't jealousy more a reason for personal fighs instead for real wars ? Interesting thoughts :-)

I guess you're partly right, but you can't know for sure what is dragging us out to war, I bet in some cases there are jealousy involved, but if you would ask me to re-phrase myself I would say difference is another big reason to war, simply people not understanding each other.

I think that would be an awesome summary. It all comes down to difference and the ability to cope with this.