International leader fled country (4)
I believe the answer is:
iran
'country' is the definition.
(Iran is an example)
'international leader fled' is the wordplay.
'leader' suggests taking the first letters.
'fled' becomes 'ran' (I've seen this before).
The first letter of 'international' is 'i'.
'i'+'ran'='IRAN'
(Other definitions for iran that I've seen before include "Country that was Persia" , "It was known as Persia until 1935" , "Persia some time ago" , "It used to be Persia" , "foreign land" .)