Intended procedure is diplomacy with icy cold suavity initially (7)
I believe the answer is:
tactics
'intended procedure' is the definition.
'tactics' can be an answer for 'procedure' (I have seen 'Purposeful procedure ' mean 'tactics' so perhaps 'procedure' could also mean 'tactics'). I am not certain of the 'intended' bit.
'diplomacy with icy cold suavity initially' is the wordplay.
'diplomacy' becomes 'tact' (tact can mean diplomacy or sensitivity).
'with' is a charade indicator (letters next to each other).
'initially' indicates taking the first letters.
The first letters of 'icy cold suavity' is 'ics'.
'tact'+'ics'='TACTICS'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for tactics that I've seen before include "Military skill" , "Short-term strategy" , "Art of disposing forces in battle" , "Manuvres" , "Art of military warfare" .)