Just over four weeks border uproar (6)
I believe the answer is:
mayhem
'uproar' is the definition.
(I've seen this in another clue)
'just over four weeks border' is the wordplay.
I cannot really understand how this works, but
'border' could be 'hem' (I've seen this before) and 'hem' is located in the answer.
'four weeks' could be 'may' and 'may' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for mayhem that I've seen before include "Havoc, violent disturbance" , "State of great confusion and disorder" , "Violent damage, chaos" , "Chaos, violent disorder" , "wilful infliction of injury" .)