Iran formerly (6)
I believe the answer is:
persia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">iran formerly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for persia that I've seen before include "Old Iran" , "Former name of Iran" , "Iran, formerly" , "Praise be to ancient Iran" , "Old name for country at 25 Across" .)