Michael - read the accounts of KGB murder activities in Western countries in the high Cold War period - and matters are much more sophisticated these days. Poison, disease, etc...

My argument has little to do with Diana per se. It's really questioning the theoretical proposition:

Because I don't believe in A as being the cause of B, you must find an alternative (C) as the cause of B.

Whereas I could equally say:

I don't believe in C as being the cause of B, so you must find an alternative (?) as the cause of B.

Both as valid as each other - therefore neither is an absolute proof... :-)

End of thread hijack!