Former leader, second-class, getting money from Iran returned (5)
I believe the answer is:
blair
'former leader' is the definition.
(I've seen this before)
'second-class getting money from iran returned' is the wordplay.
'second class' becomes 'b'.
'getting' is a charade indicator (letters next to each other).
'money from iran' becomes 'rial' (I can't explain this - if you can you should believe this answer much more).
'returned' shows that the letters should be reversed in order.
'rial' back-to-front is 'lair'.
'b'+'lair'='BLAIR'
Can you help me to learn more?
(Other definitions for blair that I've seen before include "Labour leader from 1994" , "He followed Smith as party leader" , "Was this prime minister a Libra?" , "George Orwell's actual family name" , "A political leader" .)