Russian plane needs speed to go overseas (7)

I believe the answer is:

migrate

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

'go overseas' is the definition.
'migrate' can be an answer for 'go' (thesaurus). I'm unsure of the 'overseas' bit.

'russian plane needs speed' is the wordplay.
'russian plane' becomes 'MiG' (MiG is a Russian aircraft manufacturer).
'needs' means one lot of letters go next to another.
'speed' becomes 'rate' (the speed at which something happens).
'mig'+'rate'='MIGRATE'

'to' is the link.

Can you help me to learn more?

(Other definitions for migrate that I've seen before include "Ragtime (anag)" , "Move from one country to another to settle" , "move base?" , "Move with the seasons" , "Move to a new area" .)

I've seen this clue in The Irish News.

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