Francophiles' yen to develop their own territory? (6,9)

I believe the answer is:

french polynesia

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'own territory?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'francophiles' yen to develop' is the wordplay.
'to develop' is an anagram indicator.
'francophiles'+'yen'='francophilesyen'
'francophilesyen' with letters rearranged gives 'FRENCH POLYNESIA'.

'their' acts as a link.

Can you help me to learn more?

(Another definition for french polynesia that I've seen is " oceanic group of islands".)

I've seen this clue in The Telegraph.

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