Honours: Arabic or Middle-East Studies?

hello there,
I was wondering if anyone could help me to made a wise decision...
I've applied for a MA/Hons in International Relations in St. Andrews. I got for both hons. unconditional offers. Now i have to decide but i dont really know which is the wisest choice in terms of study and job opportunities. I know both subjects sre linked somehow but can't make up my mind
Is there anyone who can give me some advice?

Thanks