Ring Panama and Quebec as it's not clear (6)
I believe the answer is:
opaque
'it's not clear' is the definition.
('opaque' is the opposite to 'clear')
'ring panama and quebec' is the wordplay.
'ring' becomes 'o'.
'panama' becomes 'pa'.
'and' means one lot of letters go next to another.
'quebec' becomes 'que' (abbreviation for Quebec).
'o'+'pa'+'que'='OPAQUE'
'as' is the link.
(Other definitions for opaque that I've seen before include "Shady" , "Non-translucent" , "Without lustre" , "Not translucent" , "Unintelligible" .)