National icon trusty, albeit worried about backing adversary (6,2,7)
I believe the answer is:
statue of liberty
'national icon' is the definition.
(I've seen this before)
'trusty albeit worried about backing adversary' is the wordplay.
I cannot really see how this works, but
'about' could be 'of' and 'of' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for statue of liberty that I've seen before include "tourist attraction" , "Landmark" , "figure on island" , "National icon" , "free representation" .)