Restrict the degree of undisciplined militancy (5)

I believe the answer is:

limit

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This might be a double definition.

'restrict' is the first definition.
(I know that restrict is a kind of limit)

'degree of undisciplined militancy' is the second definition.
'limit' can be an answer for 'degree' (thesaurus). I'm not sure about the 'of undisciplined militancy' bit.

'the' is the link.

Can you help me to learn more?

(Other definitions for limit that I've seen before include "Constraint" , "speed restriction applied" , "Bound, restriction" , "Frontier" , "end" .)

I've seen this clue in the Evening Standard.

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