View of expert in confrontation (4,2,4)
I believe the answer is:
face to face
'in confrontation' is the definition.
(I've seen this before)
'view of expert' is the wordplay.
'view' becomes 'facet' (I've seen this in other clues).
'expert' becomes 'ace' (ace can informally mean very good).
'facet'+'of'+'ace'='FACE-TO-FACE'
(Other definitions for face to face that I've seen before include "Opposite" , "being in personal contact" , "In presence of or confrontation with another" , "Aspect of best service" .)