The best way to restore calm would be for Israel to demand an unconditional, hands-up surrender. Once that’s been achieved, Jewish settlers should be allowed to return to Gaza.
Israel doesn’t want Gaza and it also doesn’t want Jews in there who would be in constant danger. That’s nowhere in Israel’s objectives. Israel simply wants the Palestinians “in there” (so that they’re not “in Israel”) and for the rockets to stop.
First no peace will happen unless Gaza is wiped clean of all Hamas. Two ways, any resistance shoot to kill or drown in the sea. Retake the land under Israel rule and temporary set the military as occupation force while building a justice system with police. A strong force should be located between Egypt border to the Gaza strip.