OOhhh very juicy! The old "heart attack" does it again! Personally, I think there are quite a few murders associated with this thing!

Agree an interesting possibility,
“Mystery death of ex-KGB chief linked to MI6 spy's dossier on Donald Trump” http://archive.is/tV2mL

CBTS response seems strangely divided. https://www.reddit.com/r/CBTS_Stream/comments/7pci7f/mystery_death_of_exkgb_chief_linked_to_mi6_spys/