CBI worried by Mujahideen leader making long-range weapon (1,1,1,1)
I believe the answer is:
i c b m
'long-range weapon' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'cbi worried by mujahideen leader' is the wordplay.
'worried' is an anagram indicator.
'by' is a charade indicator (letters next to each other).
'leader' suggests taking the first letters.
The first letter of 'mujahideen' is 'm'.
'cbi' is an anagram of 'icb'.
'icb'+'m'='I C B M'
'making' acts as a link.
Can you help me to learn more?
(Another definition for i c b m that I've seen is " Kind of powerful rocket".)