I made a decision.
I am not applying to the post in the Ministry of Foreign Affairs.

The main reason being the current commitment I have achieved with the work I am developing, I need to be here at least until april/may next year, and I don't want to give a bad impression or leave things undone or even close a door, specially in a country where image and contacts are everything to provide you with some proffesional opportunities. (considering everyone knows each other)

So, decision made... I wrote my friend/colleague an email, thanking her for the opportunity and hoping that when I am free to take that step... I have a door open there again.

Let's see when opportunity knock by again. I am sure it will. And finally I have peace of mind again.