Perils bringing death to French city (9)
I believe the answer is:
endangers
'perils' is the definition.
(I know this)
'death to french city' is the wordplay.
'death' becomes 'end' (synonyms).
'to french city' becomes 'Angers' (Angers is a city in France).
'end'+'angers'='ENDANGERS'
'bringing' is the link.
(Other definitions for endangers that I've seen before include "Puts in peril" , "poses a threat" , "Imperils" , "Puts into jeopardy" , "Places in peril" .)