Country heading for shambles with Etonian premier (6)

I believe the answer is:

sweden

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'country' is the definition.
(Sweden is an example)

'heading for shambles with etonian premier' is the wordplay.
'heading for' indicates taking the first letters.
'etonian premier' becomes 'eden' (I can't justify this - if you can you should give a lot more credence to this answer).
The first letters of 'shambles with' is 'sw'.
'sw'+'eden'='SWEDEN'

Can you help me to learn more?

(Other definitions for sweden that I've seen before include "4's neighbour" , "We send out to here, oddly" , "We send to Scandinavian country" , "Country with blue and yellow flag" , "Nobel's country" .)

I've seen this clue in The Guardian.

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