Falklands: SCDS briefing for CDS (1530Z & 1700Z) ("Mandarins' Meeting at 1650 and OD(SA) at 1800 on Tuesday 20 April 1982") [Mandarins to discuss possible evacuation Falklands population and perhaps Haig proposals; OD(SA) to make final decision on Paraquet] [declassified Spt 2017]