Amenities which, when destroyed, make cities fail (10)

I believe the answer is:

facilities

I'm a little stuck... Click here to teach me more about this clue!

'amenities which when destroyed' is the definition.
'facilities' can be an answer for 'amenities' (I've seen this before). I am unsure of the rest of the definition.

'make cities fail' is the wordplay.
'make' indicates anagramming the letters.
'cities'+'fail'='citiesfail'
'citiesfail' with letters rearranged gives 'FACILITIES'.

Can you help me to learn more?

(Other definitions for facilities that I've seen before include "Services" , "amenities" .)

I've seen this clue in The Irish Times.

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