Red led USSR astray, having lost control (10)
I believe the answer is:
rudderless
'having lost control' is the definition.
(I've seen this before)
'red led ussr astray' is the wordplay.
'astray' indicates an anagram.
'red'+'led'+'ussr'='redledussr'
'redledussr' anagrammed gives 'RUDDERLESS'.
(Other definitions for rudderless that I've seen before include "Without steering mechanism" , "not yielding power to steer" , "Lacking direction" , "Having lost control" , "Unable to provide guidance" .)