Secretly solicit a liaison in a foreign country (6)
I believe the answer is:
italia
'a foreign country' is the definition.
(Italy in 'Italian')
'secretly solicit a liaison' is the wordplay.
'secretly' says the answer is hidden in the clue.
'ITALIA' can be found hidden inside 'solicit a liaison'.
'in' is the link.
(Other definitions for italia that I've seen before include "Italy (Ital.)" , "Country in its own language" .)