Focal point of recent agitation (6)

I believe the answer is:

centre

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'focal point' is the definition.
'centre' can be an answer for 'point' (centre is a kind of point). I'm unsure of the 'focal' bit.

'recent agitation' is the wordplay.
'recent' anagrams to 'CENTRE'.
But, I'm not clear how the anagram is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for centre that I've seen before include "Middle, core" , "and this may follow 26, 25 [LEFT RIGHT]" , "Exact middle point" , "The point equidistant from everywhere" , "focus" .)

I've seen this clue in the Evening Standard.

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