One sacks Republican adviser on right (6)

I believe the answer is:

raider

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'one sacks republican adviser on right' is the definition.
I can't tell whether this defines the answer.

'republican adviser on right' is the wordplay.
'republican' becomes 'R' (abbreviation in US politics).
'adviser' becomes 'aide'.
'on' says to put letters next to each other.
'right' becomes 'r' (common abbreviation).
'r'+'aide'+'r'='RAIDER'

Can you help me to learn more?

(Other definitions for raider that I've seen before include "One who makes a sudden swift attack" , "One making incursion" , "Pillager, plunderer" , "One plundering" , "Marauder" .)

I've seen this clue in The Guardian.

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