There is solid science behind what is moral in the world. It's a good idea for countries to work together to maintain a moral standard internationally.
Of course, I wouldn't dare say a single definition is unequivocally better or something, but there are models.
I think a large part of the world lacks even baseline education and stability that would be required to make a principled choice on morality. And then (specially in that region) there are complicated matters such as religious fanaticism and ethical rivalry -- things which hopelessly lack even self-consistency in the scientific sense.