Eminent power couple briefly inflame again (2-6)

I believe the answer is:

re-ignite

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'inflame again' is the definition.
I can't tell whether this defines the answer.

'eminent power couple briefly' is the wordplay.
'eminent power' becomes 'reign' (I've seen this before. I am not sure about the 'eminent' bit.**).
'couple' becomes 'item' (I've seen this before).
'briefly' means to remove the last letter.
'item' with its last letter taken away is 'ite'.
'reign'+'ite'='RE-IGNITE'

Can you help me to learn more?

I've seen this clue in The Independent.

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