Trouble near the capital (7)
I believe the answer is:
teheran
'capital' is the definition.
(alternative spelling of Tehran, capital of Iran)
'trouble near the' is the wordplay.
'trouble' indicates anagramming the letters.
'near'+'the'='nearthe'
'nearthe' is an anagram of 'TEHERAN'.
(Other definitions for teheran that I've seen before include "Iran's capital" , "City" , "Iran capital (one spelling)" , "Near the (anag) - capital" .)