As the storm over the assassination of Hamas leader Mahmoud al-Mabhouh picks up momentum, I am not buying into the whole business of lack of competence and ambiguity.
I don't think the Israeli spy/killing agency - the Mossad is that sloppy, or Israel that lax.
True, Israel's mounting arrogance did lead to a number of security screw-ups over the years, and this could be such a repeat. But this operation looks more like a deliberate act of arrogance than not.
If it was merely a question of mistakes or failures, the Mossad would have had to go out of its way to behave so unprofessionally or so incautiously.
Nor do I buy the theory that a less competent foreign agency or group has carried out the operation in a way that implicates Israel. That's just adding insult to insolence.
Generally, assassinations carry double meanings. The first is answered by 'why' and the second 'how'.