You provided a list of reasons why you feel like teenagers at a music festival should be murdered, right?

Like my personal sentiment is, war is senseless, and both sides are wrong in some way or another. But yeah, I don't think children should be murdered period, so I'm not going to try and give a list of reasons why it's OK, because there isn't one.

Anyone committing war crimes should be punished for it, period.

My original question was simply, what should have been done differently "by the world leaders"?