5. Inter-Services Intelligence (ISI)
Founded: 1948
Headquarters: Islamabad, Pakistan
ISI, the most important intel agency of Pakistan, in collaboration with the CIA and Mossad, performed an undercover operation of Soviet-made and Lebanese weapons during the Israeli invasion. This is enough reason to prove that it’s one of the world’s deadliest intelligence agencies and they work hand-in-hand to bring down terrorist attacks.
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