Way defence ministry covers the unexpected (6)
I believe the answer is:
method
'way' is the definition.
(method is a kind of way)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for method that I've seen before include "System (of acting?)" , "Procedure or system" , "Manner, technique" , "Process, esp. Stanislavsky's" , "Tidy way of doing things" .)