The SAS Did Diana

Britain's SAS (Special Air Services) trained the Khmer Rouge.

The British Special Air Services (SAS) firm Keenie Meenie Services reportedly trained the Tamil Tigers.

(Southern India, Sri Lanka terrorist groups)

The SAS trained bin Laden's Mujahedin fighters in Scotland

In the early 1970s Rafael Eitan, head of the Mossad hit-squad known as the 'Kidon', toured Northern Ireland and the Special Air Services (SAS) base in Hereford, England. 

Shortly after his visit there were big changes in UK security policy, including the setting up of what was to become the Force Reconnaissance Unit (FRU) . 

The FRU may have been involved in the de Menezes killing.