This sounds more likely to me that prevention of "networking." But someone needs to start a list so we can look at it all at once to look for any big picture that may be there. Don't forget that the doctor in Chili who received the anthrax letter had an affiliation with St. Jude Hospital, as did the missing biologist, Don Wiley.
Then again, don't forget that all these deaths and disappearances may go on all the time among this population, but most of the time no one notices. What we REALLY need is a statistician!
Because of our normal likely suspects who are "in business" around the World destabilizing nations use this concept religiously ----- "Compartmentalizing".
The players/tools who could provide information of very Key Aspects of an Operation are eliminated.
In this possible operation the list could get much longer than "The Clinton Death List" that covered Mena, BCCI, and the S&L scams.
None of the burned ex-players knew the whole picture, but each could have provided Key Aspects of it. McDougal, Foster, etc