Government accepting British currency abroad (5)

I believe the answer is:

ruble

I'm a little stuck... Click here to teach me more about this clue!

'currency abroad' is the definition.
I can't tell whether this defines the answer.

'government accepting british' is the wordplay.
'government' becomes 'rule' (rule can mean government or control).
'accepting' indicates putting letters inside (inserted letters are accepted).
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'rule' placed around 'b' is 'RUBLE'.

Can you help me to learn more?

(Other definitions for ruble that I've seen before include "Russian currency" , "Unit of money in Russia" , "ready in Russia" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.