Au contraire...It's not the countries that don't get on, it's the people of one country that doesn't seem to get along with anyone else.
It's the politicians and string pullers that convince enough of their populations that another country is the problem...
Having spent quite a while in the ME, the jews don't hate the muslims per se, and vice versa....
However every now and then they get wound up in such a way by said politicians/string pullers that they are led to believe it is 'johnny/jane foreigner' that is to blame for all their problems...
And after all, it's no different here!