Hello there. Hope you are doing good. I would like to tell you that there is no such MBA specialization that guarantees your job abroad. It depends completely on your learning and your performance. Presently, MBA specializations can be useful in various departments of a corporate. You need to identify your field of interest, gain experience in it and your chances of getting a job abroad will automatically be increased. In general if you talk about, MBA Finance, MBA Supply Chain Management, MBA Marketing are some of the specializations that are mostly look after by foreign employer.

I hope you found this answer helpful. Good luck.