Port, as provided in a new bar (5)
I believe the answer is:
basra
'port' is the definition.
(I have seen 'Iraqi port ' mean 'basra' so perhaps 'port' could also mean 'basra')
'as provided in a new bar' is the wordplay.
'provided in' indicates putting letters inside.
'a new' indicates anagramming the letters.
'bar' anagrammed gives 'bra'.
'as' inserted into 'bra' is 'BASRA'.
(Other definitions for basra that I've seen before include "Middle Eastern city" , "Iraqi city; Arabs (anag.)" , "City in Iraq" , "South Iraqi oil port" , "Iraqi port city" .)