You could have thanked me for 'educating' you on the matter, at the very least.
Anyway, You had no clue that forensics could be carried out to determine the spent life of ammunition and hence your previous post, which I debunked and made you look like the fool that everyone on this forum knows you are.
And it is not necessary for the retaliation to take place within minutes, especially when one side was open to observation and knew that the few hours would make a marked difference in forensic results. Furthermore, the UN observers can also observe the 'hot' areas to determine whether the actions and reactions were proportionate and inquire around to find out from the populace who fired the first shot. Although it is near impossible for your tiny little brain to comprehend that it can actually be determined who initiated the bout, it is a fact, it can be done and that is what India is scared of......along with casualties on her side!