If we dont hang them, they will hizack some plane or minister or hostage innocent school children or innocent civilians or may attack sensitive areas likes temples, churches and mosques.
We all very well know, that people who died in bombay blasts in 93, may not return back even if they are hanged, but if we leave them alive in indian jails, they will try to escape by all the above means. Before we hang them, immediately we should make them like vegtables, we should make their lives not fit to live. Then we can think of their hang or not.
Gandian principles doesnt work with terrorists, and we should amend our constitution and should remove presidential powers to pardon terrorists from death penalty.one terrorists may kills thousands of civilians and infuture if bhuta singh or laloo yadav becomes presidents, they will make it a bussiness to pardon terorists(shameless creatures)