To an extent it's of Iran's making (2,2,3)
I believe the answer is:
in so far
'to an extent' is the definition.
I can't tell whether this defines the answer.
'of iran's making' is the wordplay.
'making' indicates an anagram.
'of'+'irans'='ofirans'
'ofirans' with letters rearranged gives 'IN SO FAR'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for in so far that I've seen before include "Inasmuch" , "To the degree or extent that" .)