Two doctors are at state port (7)
I believe the answer is:
mombasa
'port' is the definition.
(I have seen 'Kenyan port' mean 'mombasa' so perhaps 'port' could also mean 'mombasa')
'two doctors are at state' is the wordplay.
'two doctors' can mean two replacements for 'doctor'.
'doctor' becomes 'mo' (medical officer).
'doctor' becomes 'MB' (Bachelor of Medicine, Medicinae Baccalaureus).
'are at state' becomes 'asa' (I can't explain this - if you can you should believe this answer much more).
'mo'+'mb'+'asa'='MOMBASA'
Can you help me to learn more?
(Other definitions for mombasa that I've seen before include "Kenyan port" , "Port city of Kenya" , "African port" , "Chief port of Kenya" , "African city" .)