Country having long border where you find it (5)
I believe the answer is:
yemen
'country' is the definition.
(I know that Yemen is a Asian country)
'long border where you find it' is the wordplay.
I cannot quite understand how this works, but
'you' could be 'ye' (historical version of 'you') and 'ye' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'having' is the link.
(Other definitions for yemen that I've seen before include "Arab state" , "Arabian republic, capital Sanaa" , "Arab country" , "Middle Eastern country" , "Aden is found here" .)