Old US politician pashing Queen (9)
I believe the answer is:
kissinger
'old us politician' is the definition.
The definition suggests a singular noun which matches the answer.
'pashing queen' is the wordplay.
I cannot really see how this works, but
'queen' could be 'er' (abbreviation for Elizabeth Regina) and 'er' is located in the answer.
The remaining letters 'kissing' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for kissinger that I've seen before include "Henry --, US diplomat" , "Henry __, US Secretary of State under Presidents Nixon and Ford" , "Old statesman" .)