A first step would involve speaking with one galvanized voice instead of with two feuding geographically isolated factions, each with a different strategy on how to move forward. A second would be total demilitarization, the ditching of paramilitary groups committed to the destruction of Israel, not being Iranian proxies (both of the latter being obvious showstoppers among the Israelis). Given the events of the past few days, that decision has now been taken off the table since Hamas' days are numbered as well.
No country worth its salt would accept a total demilitarization, unless you want to self-destruct. You're living in a fantasy land and I don't believe for one second that you seriously meant that.
They allied to Iran because they've been fecked over for the past 50 years and no one else wants to. It's their only chance to survive as a country.
I've yet to see in which alternate reality a country boasting one of the most powerful armies, one the best intelligence agencies, and to top it all, backed to the hilt by the whole western world and the most powerful military in human history is in danger of destruction by a couple of lunatics with AK 47s and unguided rockets. Oh, they also have about 150 nukes, should someone get any idea. This myth needs to die.
Even if you kill every single Hamas member, as long as the same conditions persists, another extremist organization will take their place. That's how it works. Keep the blinders on and history will repeat itself.