We are aware that she protected Pinochet from standing trial for crimes against humanity.
It is now revealed that she provided SAS help to Pol Pot (remember the Cambodian Killing Fields)
How Thatcher helped Pol Pot | Global Research
I am sure that more unavoury facts about her will be revealed now she is dead, (just as they were with Savile), and her admirers will regret their glowing eulogies.
Incidentally Savile was regarded as a friend of hers, and had regular invites to Chequers.
I surmise that she needed updates about the unsavoury practices that many of her ministers indulged in, in order to control them by veiled threats of exposure.