Ugandan dictator ring little jerk? That's very foolish! (7)

I believe the answer is:

idiotic

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'very foolish' is the definition.
(I've seen this in another clue)

'ugandan dictator ring little jerk?' is the wordplay.
'ugandan dictator' becomes 'idi' (I can't justify this - if you can you should believe this answer much more).
'ring' becomes 'o' (letter resembling a ring).
'little jerk?' becomes 'tic' (I've seen this in another clue).
'idi'+'o'+'tic'='IDIOTIC'

'that's' acts as a link.

Can you help me to learn more?

(Other definitions for idiotic that I've seen before include "Daft" , "Altogether nonsensical" , "without intelligence" , "Ridiculous" , "Stupid, foolish" .)

I've seen this clue in the Sydney Morning Herald.

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