I am not aware of this,May be you can add more details. But India Government is definitely not behaved a "saint" in South Asia due to Nehru's failed foreign policy.We were not "loyal" to Pakistan the same they were to us.
In 1971 if the refugee problem is the real problem we faced we could have talked with Pakistan Govt to resolve the dispute . But we did not do that.
If we really wanted to help Srilankan tamils we could have talked with their government but we did not .
Just think what we did when Bangladesh Rifles revolt happened, We did not talk with those who killed the BD military officials but we talked with the government of Bangladesh .
India definitely believes Mumbai attacks planned by ISI.At least after Mumbai attack India would have "resumed" covet operations inside Pakistan. There are two places we can score against Pakistan ,from Kashmir or Baluch . Controlling Kashmir can break their back bone by having control of Sindh (All rivers comes to Indian control). Or you can try to control Baluch which rich in natural resources.
I do agree unstable Pakistan is definitely not our interest. But unstable Baluch is definitely our interest.ISI is very strong in Kashmir.If we plan for any covet operation we can plan only in Baluch not in Sindh, Possibly India can even plan for another '71 in Baluch .This would be definitely a Huge success for India if it is successful. It stops American aggression in Pakistan as US would happy to be stationed in Baluch (Still a threat to India because US accessing Arabic Sea,May be Indian Govt again starts something there in Baluch with the help of Russians
).It stops Chinese access to Pakistan and middle east.
I am not that good at strategic interest ,But these came to my mind when I think how to punish some one for the terrorism in our soil.you cannot defend always you need to be offensive too.
I do not know if this is true,But if this is true I am definitely ashamed to be an Indian. Just to score your strategic interest , making millions of people suffer is not good.