What should I do about my son who traveled to Western countries to study programming, despite my objection, believing that he would benefit his country, and who has cut me off after my persistent urging for him to return?

It is permissible for a son to travel to seek knowledge or engage in trade if the path is safe and there is no fear of harm befalling him, and if his travel does not result in the neglect of his parents. Therefore, there is no objection to your son remaining for study if the place is safe. However, if he fears for his religion or himself, he must return to his country, and this is confirmed by your command for him to return. If he prevents you from speaking about this matter and cuts you off, then this is an act of disobedience (ʿuqūq). We advise you to supplicate for his guidance and success, for the parent's supplication for their child is answered.