Stalin foe to walk on air (7)
I believe the answer is:
trotsky
'stalin foe' is the definition.
The definition suggests a singular noun which matches the answer.
'walk on air' is the wordplay.
'walk' becomes 'trot' (trotting is a kind of walking).
'on' is a charade indicator (letters next to each other).
'air' becomes 'sky'.
'trot'+'sky'='TROTSKY'
'to' is the link.
Can you help me to learn more?
(Other definitions for trotsky that I've seen before include "Russian revolutionary assassinated in Mexico" , "Bolshevik" , "Former Communist" , "Russian assassinated in nineteen forty" , "Revolutionary ousted by Stalin" .)