Sorry, how would I find a person in another country?

Question

My father's dad has not seen his brother since 1972. The last time he knew anything, his brother was in Arabia. He just disappeared. There was no way of them keeping in contact.

Answer 1

In western countery - you can use the international phonebook.
in saudia arabia - the internet will not help you.
you should use personal help for it.

Answer 2

Try posting a classified in a newspaper of the country you want to make the search.