Northern country includes very advanced, idyllic state (7)

I believe the answer is:

nirvana

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'idyllic state' is the definition.
'nirvana' can be an answer for 'state' (nirvana is a kind of state). I am not certain of the 'idyllic' bit.

'northern country includes very advanced' is the wordplay.
'northern' becomes 'n' (abbreviation e.g. N. Ireland).
'country' becomes 'Iran' (Iran is a country).
'includes' is an insertion indicator.
'very' becomes 'v' (abbreviation).
'advanced' becomes 'a' (abbreviation).
'iran' placed around 'v' is 'irvan'.
'n'+'irvan'+'a'='NIRVANA'

Can you help me to learn more?

(Other definitions for nirvana that I've seen before include "State of perfect happiness" , "blessed release" , "Buddhists' transcendental state" , "Eastern place or state of bliss" , "Ultimate state in Buddhism" .)

I've seen this clue in The Telegraph.

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