Ban for Hungary initially took effect after international (8)
I believe the answer is:
prohibit
'ban' is the definition.
(I've seen this before)
'for hungary initially took effect after international' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'initially' says to take the initial letters.
'took effect' becomes 'bit' (I've seen this before).
'after' is a charade indicator (letters next to each other).
'international' becomes 'i' (abbreviation eg in IMF).
The first letter of 'hungary' is 'h'.
'bit' put after 'i' is 'ibit'.
'pro'+'h'+'ibit'='PROHIBIT'
(Other definitions for prohibit that I've seen before include "Stop" , "Proscribe, forbid" , "Bar" , "Forbid, ban" , "Formally forbid" .)