Embassy's temporarily restricting plan of action (6)
I believe the answer is:
system
'plan of action' is the definition.
(system is a kind of plan of action)
'embassy's temporarily restricting' is the wordplay.
'SYSTEM' is hidden in amongst the letters.
But, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for system that I've seen before include "Method, set of connected things" , "Plan of action" , "Arrangement of units in a whole" , "A complete set of procedures for doing something" , "Functioning set of interactive parts" .)