7. We appreciate that it would be preferable not to carry out sorties over Russian satellite territories in the Balkans at the present juncture, but knowledge or Russian activities in these territories is of such significance that we consider that the risk should be taken. SECURITY 8. Special precautions in every field would be taken for the concealment of our reconnaissance activities. OTHER CONSIDERATIONS 9. Targets in countries under Russian control, with the exception of Finland, can be conveniently covered at present from existing R.A.F.