Supermodel commercial that's known for its intelligence (6)

I believe the answer is:
mossad
'known for its intelligence' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'supermodel commercial' is the wordplay.
'supermodel' becomes 'moss' (I can't explain this - if you can you should believe this answer much more).
'commercial' becomes 'ad' (abbreviation for advertisement).
'moss'+'ad'='MOSSAD'
'that's' is the link.
Can you help me to learn more?
(Other definitions for mossad that I've seen before include "Israeli intelligence service" , "Agents" , "Foreign intelligence agency" , "Israeli secret service" , "Israeli intelligence agency" .)
