Leaders of Ukraine never had strong desire to be free from attachment (7)

I believe the answer is:

unhitch

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'free from attachment' is the definition.
'unhitch' can be an answer for 'free' (I've seen this before). I'm not sure about the 'from attachment' bit.

'leaders of ukraine never had strong desire' is the wordplay.
'leaders of' says to take the initial letters.
'strong desire' becomes 'itch' (I've seen this before).
The initial letters of 'ukraine never had' is 'unh'.
'unh'+'itch'='UNHITCH'

'to be' is the link.

Can you help me to learn more?

(Other definitions for unhitch that I've seen before include "Remove from a harness" , "Separate" , "Unhook, unfasten" , "Part" , "Release" .)

I've seen this clue in The Guardian.

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