Take a lesson from Mossad (Israeli intelligence agency).All the people responsible for assasianation of Israeli atheletes in 1972 Summer Olympics in Munich have been killed by Mossad even after 20 years of incident.Israel never compromise on terrorism , no negotiations.We have to pay some times bigger price.But just compare we released Masood Azhar from Jail to save 200 peoples and he created Jaishe e Mohammad which has killed more than 300 o people in terrosris activities. Now u can decide which one is better choice.