What do you think they’re already doing in northern Gaza. Dozens of IDF whistleblowers confirm there is a shoot anything that moves policy and that successive units rotated into the Netzarim Corridor compete to get the most kills.
No need to get Sharon etc, they’ve already got enough war criminals at work.
The only way to defeat the resistance (most fighting groups predate Hamas and are not part of their structure) is with a political solution…. But that’s just counterinsurgency 101.