Technically the Indian military support and sanctuary for East Pakistani terrorists/rebels would be considered an 'Act of War'.
I agree. But in most cases, acts of war are more honourable than acts of genocide. Especially when the said act of war was to put an end to the said act of genocide.
PS: I have left you a message on your page about the deletion of some posts. Please respond to it. I did not know I could send it as a private message.