I`ll give you an example that happened just yesterday.PTEX would you as an Israeli go to egypt and tell them you want to be friends with the common egyptian ?
After the expulsion and persecution of Jews from Arab countries after the Six Day War, a Libyan Jew returned to Libya hoping that it would be a multi cultural tolerant country now that Gaddafi was gone and he came there with open arms wanting to live and fix the ancient synagogue there.
Do you know what happened? Islamists came and threatened to kill him and told him to flee or die, stubbornly he stayed even though it might cost him his life, hopefully he regains some sense.
Do you get the moral of the story?
And yes, it is thousands of years of war because Abraham had two sons: From an Egyptian servant girl,(Ishmael the father of all Arabs) and from his wife(Isaac the father of all Jews) and since Abraham`s rightful son was Isaac...
But then again it is said that Ishmael`s descendants would be numerous as sand itself while Isaac`s descendants, well are very few.