So what would be a "legitimate response to what happened" then? Bear in mind that what happened was a neighbouring government force attacked a country and murdered, raped, tortured,burnt alive, and kidnapped civilians in their homes,on the streets and at a music festival. What do you think, say, the US would do about that if it happened to them, for example? What are Israel supposed to do exactly? Seems like a lot of people expect them to do nothing while a literal terrorist group vow to wipe them from existence, even now they say they won't stop. Are they supposed to just not fight back and not exist anymore or something?