Surrounded by swarming bees, I leave it (5)
I believe the answer is:
beset
'surrounded' is the definition.
(I've seen this before)
'swarming bees i leave it' is the wordplay.
'swarming' is an anagram indicator.
'leave' is a deletion indicator.
'it' with 'i' taken out is 't'.
'bees' is an anagram of 'bese'.
'bese'+'t'='BESET'
'by' acts as a link.
(Other definitions for beset that I've seen before include "Assail (with problems?)" , "Hem in, afflict" , "Trouble or harass persistently" , "plague" , "Attack - surround" .)