Resolves to prevent explosive devices (10)

I believe the answer is:

determines

'resolves' is the definition.
(determining is a kind of resolving)

'prevent explosive devices' is the wordplay.
'prevent' becomes 'deter' (I've seen this in another clue).
'explosive devices' becomes 'mines' (mine is a kind of explosive device).
'deter'+'mines'='DETERMINES'

'to' acts as a link.

(Another definition for determines that I've seen is " Decides".)

I've seen this clue in The Telegraph.

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