Certain to contain final elements of the Iraqi blitz attack (7)
I believe the answer is:
seizure
'attack' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for seizure that I've seen before include "convulsion?" , "Paroxysm" , "Sudden fit" , "Apprehension" , "Taking something" .)