It just seems crazy to me given the power imbalance. A cynical part of me suspects that things are playing out exactly as some evil strategists hoped they would, which, given all the children dying, is super-depressing.
I look forward to hearing your thoughts.
This is just my opinion but, given terrorist organisations are militarily usually much poorer/smaller/weaker than the group they stand against, they need help from outside.
One way to possibly achieve that is to do something awful to provoke your opposition into a retaliation so indiscriminate and horrifying that your ideological (if not literal) allies in the surrounding area step in to attack your enemy.