Iran Behind British Deaths in Iraq

This is interesting and potentially disasterous: Britain has accused Iran of responsibility for explosions which have caused the deaths of all eight UK soldiers killed in Iraq this year.
Granted, the US supplies weapons to loads of places... maybe that's why we're blamed for so much just like the British are blaming Iran. This isn't to say that Iran isn't doing a horrible thing. I don't think anyone should be supplying weapons to insurgents, I'm just pointing out a parallel.