One obliterates times in more left-wing surroundings, withholding power (3-6)

'one obliterates' is the definition.
(something which erases or obliterates ink)

'times in more left-wing surroundings withholding power' is the wordplay.
I cannot quite see how this works, but
'times' could be 'eras' (era is a kind of time) and 'eras' is found in the answer.
'in' is found in the answer.
'wing' could be 'r' (r is abbreviation for right) and 'r' is located in the answer.
'power' could be 'ke' (K.E. is an example) and 'ke' is found within the answer.
No letters remain.
This explanation may well be incorrect...