Given the right amount of cash, yes. If I'd need to go undercover, my bets would be either Yugoslavia or the communist states in South America. Julian Assange actually managed to outbid the USA in the open (but I'm not sure if one can call his current situation a win)
It's not just cash. It's political favours, foreign aid, trade deals, international bodies etc.
my bets would be either Yugoslavia
Well that country doesn't exist any more, it broke up. Some of the former Yugoslavia are in the European Union (Croatia, Slovenia). The rest want it. "Oh sorry, we can't let you in/let you in the eurozone/let you in schengen until you abide by international law and extradite these people!". This has happened before, with war crimes, and generals in the Yugoslav wars.
