Pueblo county’s political alliance (4)

I believe the answer is:

bloc

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'political alliance' is the definition.
(I've seen this before)

'pueblo county's' is the wordplay.
'BLOC' is hidden in amongst the letters.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for bloc that I've seen before include "Group of countries with a shared aim" , "multinational group" , "A number of countries" , "Alliance - coalition" , "Nations grouped for a purpose" .)

I've seen this clue in The Hindu.

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