Country dancing is not easy? Not half! (7)
I believe the answer is:
estonia
'country' is the definition.
(European country)
'dancing is not easy? not half' is the wordplay.
'dancing' is an anagram indicator.
'not half' suggests halving the letters.
'easy' with half the letters taken is 'ea'.
'is'+'not'+'ea'='isnotea'
'isnotea' with letters rearranged gives 'ESTONIA'.
(Other definitions for estonia that I've seen before include "East European country" , "On a site (anag)" , "So eat in here in Eastern Europe" , "Republic in northeastern Europe" , "Baltic republic, capital Tallinn" .)