Crossword Genius

It's set to cause future problems (4,4)

Ross

I believe the answer is:

time bomb

(Other definitions for time bomb that I've seen before include "Detonating mechanism with clock" , "one should go off to order" , "Ticking peril" , "one could go off after a while" , "Device set to explode later" .)

I've seen this clue in The Guardian.
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