State Lear is miscast (6)
I believe the answer is:
israel
'state' is the definition.
(I know that Israel is a state)
'lear is miscast' is the wordplay.
'miscast' is an anagram indicator.
'lear'+'is'='learis'
'learis' anagrammed gives 'ISRAEL'.
(Other definitions for israel that I've seen before include "Strange serial country" , "Lear is to be found in this state" , "Go to this country for ale, sir" , "Eastern Med nation" , "Zion" .)