<human>: Can you succinctly summarize the text in 1-3 sentences?

The situation is simple - i am in a country where i don't have a citizenship in, and I want as many options open for when I will come back (and I want to come back). My boss may end up my only option.
He tends to shout and curse and get annoyed easily, and I don't want to be on his bad side.

He still thinks I'm coming back, and I don't know how to explain to him that's not gonna happen. Maybe at all but certainly not yet. 

My reason for leaving is that there is another country I want to check out, that despite never being there Im still a citizen there.

What is a nice way I can do it? I'm trying to think outside the box and what I thought about is fairly simple - to tell him face to face in one of our meetings.
<bot>: difficult boss needs to be notified of my coming leaving. I need a way not to piss him off while doing so.