Notice Eire investing in whiskey: that's awkward (9)
I believe the answer is:
maladroit
'awkward' is the definition.
(synonyms)
'notice eire investing in whiskey' is the wordplay.
'notice' becomes 'ad' (both can mean an advertisement).
'eire' becomes 'roi' (I can't justify this - if you can you should give a lot more credence to this answer).
'investing in' means one lot of letters goes inside another.
'whiskey' becomes 'malt whiskey' (malt whiskey is a kind of whiskey).
'ad'+'roi'='adroi'
'adroi' placed within 'malt' is 'MALADROIT'.
'that's' is the link.
Can you help me to learn more?
(Other definitions for maladroit that I've seen before include "Clumsy or bungling, ham-fisted" , "Inefficient, clumsy" , "Awkward - unskilful" , "Inept, clumsy" .)