Calling the embassy (7)
I believe the answer is:
mission
I believe this clue is a double definition.
'calling' is the first definition.
(calling can mean a mission or vocation in life)
'embassy' is the second definition.
(I know that embassy can be written as mission)
'the' acts as a link.
(Other definitions for mission that I've seen before include "1996 Tom Cruise spy film -- extremely dangerous assignment" , "Very dangerous assignment -- Tom Cruise film series" , "Delegation" , "Ministry sent by a church to spread its teaching" , "important business" .)