Long river in Israel I navigate the wrong way (4)
I believe the answer is:
nile
'long river' is the definition.
(I've seen this before)
'in israel i navigate the wrong way' is the wordplay.
'in' indicates a hidden word.
'the wrong way' shows that the letters should be reversed in order.
'elin' is hidden in the letters of 'israel i navigate'.
'elin' written backwards gives 'NILE'.
(Other definitions for nile that I've seen before include "River of Egypt" , "Long river" , "River of eastern Africa" , "River (which is originally blue and white)" , "Take a line to the river" .)