My first thought was North Korea, but in reality if you don't go anywhere unattended, it's doable. Venezuela is a country that is out of control. I was 300 feet away, but after buying lunch for some refugees near their encampment to get a correct assessment of the risk, it's obviously a no-go. There's no real order to the repression, just armed gangs loyal to Maduro killing anyone they don't like for any reason. Even Iran is doable if you don't offend Islamic dogma. What places would you put on the list of risky countries to visit? What places are risky but doable? Would you go to any of them?