Foreign Office desk (6)
I believe the answer is:
bureau
I believe this clue is a double definition.
'foreign office' is the first definition.
('office' in French)
'desk' is the second definition.
(type of writing desk)
(Other definitions for bureau that I've seen before include "Chest of drawers or office" , "Room" , "The ------, familiar name of the FBI" , "Office; writing desk" , "Government department, agency" .)