Blackguard besieging hot country (4)
I believe the answer is:
chad
'country' is the definition.
(Chad is an example)
'blackguard besieging hot' is the wordplay.
'blackguard' becomes 'cad' ('cad' can be a synonym of 'blackguard').
'besieging' means one lot of letters goes inside another.
'hot' becomes 'h'.
'cad' going around 'h' is 'CHAD'.
(Other definitions for chad that I've seen before include "Small piece that's removed when a hole is punched, in a card say" , "African country and lake" , "N.Central African Republic" , "African republic; punched bits" , "small piece forcibly removed" .)