Not at all. If the system has a weak part, you just go around it. Truthfully, how many ordinary Israeli citizens have the money to put out contracts on Iranians?
A while back, much to the aggravation of the US government, somebody proposed the idea of an "assassination pool". It is simple. Anonymous people bet that somebody will die, and the individual who guesses closest to the date when they actually die wins the pool.
Of course, if you are planning to assassinate somebody, all you have to do is place a bet near, not necessarily on, the date on which they are killed. You are paid by being emailed an account number with your pool winnings in it.
If you want to put out a contract on someone, you just bet a big chunk of money on a near date and lose. If the subject doesn't die in a year or two, the lost bets become property of the house, whoever is running the pool.
There is damn little incriminating evidence. To start a pool just submit a name, a date and your bet. What does that mean? It's just a name a date and an amount of money.
"Kim Jong Il January 01, 2007 $75k"
If you go to an anonymous website, all you see is a list of names in plain text--those in the pool, and the total amount in the pool, increased by other 'players':
"Kim Jong Il $123k"
And if you want to assassinate someone, you submit:
"Kim Jong Il July 05, 1997 $10 (for example, assuming a minimum bet of $10).
Ironically, it doesn't matter if you bet $10 or $100,000. If you are right, you just win what's in the pool. Same amount.
The guy who came out with this idea was arrested for thinking it up.
Guilty of a thought crime was he?