Praise for old Iran (6)

I believe the answer is:

persia

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

'old iran' is the definition.
(I've seen this before)

'praise' is the wordplay.
'praise' can be anagrammed to 'PERSIA'.
But, I am not sure how this is indicated.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for persia that I've seen before include "It's now known as Iran" , "Old land" , "Aspire to this old country" , "Iran, formerly" , "Old name for country at 25 Across" .)

I've seen this clue in The Globe and Mail.

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