President's retreat affected fanatical Dutch bores (4,5)
I believe the answer is:
camp david
'president's retreat' is the definition.
(I've seen this before)
'affected fanatical dutch bores' is the wordplay.
'affected' becomes 'camp' (camp can mean exaggerated or affected).
'fanatical' becomes 'avid' (I've seen this before).
'dutch' becomes 'd' (abbreviation for Dutch).
'bores' indicates putting letters inside (to bore something can mean to drill into it).
'camp'+'avid'='campavid'
'campavid' going around 'd' is 'CAMP DAVID'.
(Other definitions for camp david that I've seen before include "Maryland retreat of American presidents (4.5)" , "Maryland presidential retreat" .)