The country is alight (4)
I believe the answer is:
land
This clue is a double definition.
'the country' is the first definition.
('land' can be a synonym of 'country')
'alight' is the second definition.
(I've seen this before)
'is' acts as a link.
(Other definitions for land that I've seen before include "Women farm workers in World War II" , "See 22" , "Bring or come ashore" , "Disembark" , "Light" .)