Hold BTC. until the war starts, them dump it for gold. (and a bunker With food and a few Ak47 ) 

Then if you believe the West will win the war, make friends with some Jewish bankers.
If the you think the East will win (Russia,China,Iran,) learn to speak the language at the very least learn how to say

"Yes Master, I will Have your ass clean in no time at all just bend over"