Oh, you can carry concealed anywhere, it's just not necessarily legal.
IIRC Israel allows CC if you live in one of the at-risk zones, although, since the settlements have been abandoned now, I doubt that there are many people left who are permitted to do so.
Technically, there is CC in Colombia, provided you have the money to get a "license". Brazil, prior to the recent crackdown, was similar to that. Other than that, the world is disarmed. Oh wait. Pretty much anywhere in Africa you can get away with it, as long as you have greater firepower than the local militia or warlord.
So, just take your two armored trucks with the mounted dual .50's (Puts the fear of John Moses Browning into any man, woman, or child) and a few LAW's maybe, a band of cut-throat mercenaries goes without saying, and you should be able to get away with carrying a handgun hidden on you person. Of course, I don't think open carry would be frowned upon much either at that point.