Strategic advantage gained by tipsy lager drinking first lady (8)
I believe the answer is:
leverage
'strategic advantage' is the definition.
(I've seen this before)
'tipsy lager drinking first lady' is the wordplay.
'tipsy' is an anagram indicator.
'drinking' is an insertion indicator.
'first lady' becomes 'eve' (I've seen this before).
'lager' anagrammed gives 'lrage'.
'lrage' going around 'eve' is 'LEVERAGE'.
'gained by' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for leverage that I've seen before include "What crowbar provides" , "can achieve power" , "Purchase" , "Mechanical advantage; influence" , "Power -- advantage" .)