did nawaz kill benazir?

for those of you who love the conspiracy theories, here is a new one. it says nawaz sharif more than musharraf stands to gain from the death of benazir bhutto and was thus responsible for her deaths. here is why-
1. PPP being a personality cult based party would be without its binding glue and would fall apart sooner or later leaving the country with only one national party.
2. everyone knows that nawaz sharif could only come back to the country with the help of saudis, everyone also knows that the saudis are the biggest financiers of the terrorists, at least unofficially. so they had it within their power to eliminate the biggest competitor to nawaz.
3. by next election nawaz is sure to emerge as the largest party as public hates zardari, this would give saudis an unimaginably large influence over pakistan.
4. PML-N is known for its softer approach towards fundamentalists and the consevative sections often end up supporting PML-N rather than PPP. so they are more comfortable with the idea of nawaz as the PM rather than benazir, who was a women and thus an anathema.

i am not saying that the above assertions are true and i kind of like nawaz sharif, but this guy has gone through a lot of trouble in the past ten years and led a very frustated and insecure life and sucha person can easily become a pawn in the hands of others more powerful people.