More explosive in capital (4)

I believe the answer is:

rome

'capital' is the definition.
(capital of Italy)

'more explosive' is the wordplay.
'explosive' is an anagram indicator.
'more' is an anagram of 'ROME'.

'in' acts as a link.

(Other definitions for rome that I've seen before include "Basis for cheese" , "All roads lead to it" , "Capital of Italy" , "The Eternal City" , "Colosseum city" .)

I've seen this clue in The Sun.

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