Peter, I was not trying to imply that Fischer had motives beyond the money. My point was that he could have made the money elsewhere. The rematch was a hot ticket. The fact was he chose to accept the offer to play in Yugoslavia knowing full well that he was violating the sanctions.   Sure, there are others that probably violated the sanctions and made much more than Fischer did. Unless someone has an example, I think it would be safe to say they were quiet about it. Fischer flaunted his infraction and dared the U.S. to go after him. Well, they caught him.   The U.S. should live up to it's word.

How much money could Yugoslavia have made? Well, we aren't talking the Super Bowl or World Cup, but it did SOME financial reward to the country. I would doubt that the sponsor did it for charity. If you look at the schedule of the games, you will notice that matches were held in different cities. That involves hotels for the press, potential spectators to the matches, and broadcast rights. I would be shocked if the $5 million in prize money wasn't recouped by at least twice that amount from the examples I cited.

I disagree with your point about the UN in 1992. Here is an article that includes a summary of NATO's actions in boarding and diverting ships, as well as a list of vessels from participating countries that were inforcing the sanctions:
enforcing sanctions
In fact, in 1993 Bill Clinton invoked even tighter measures - freezing assets of U.S. companies and individuals doing business with Yugoslavia.

Please don't misunderstand me, I'm not a huge fan of sanctions. As I stated previously, I do think that they can hurt the people they are actually trying to help. In the case of Bobby Fischer, I keep coming back to the FACT that he knew the penalty before going in. Instead of fighting it in a court of law, or even in public debate, he flaunted his infraction.    If the US chooses to punish him, I have no proble with that.