Hoodat,
According to Google, we have only 76 - B-52 bombers in inventory. I say six is sufficient to level Gaza.
And Russia and Serbia will have little to say if Israel and the USA act quickly. Forget unconditional surrender, I prefer no surrender, but total annihilation of the land. Warn the people to get out, give them a few days to walk/drive to another arab state, and then begin the process of leveling Gaza permanently, NEVER to be occupied by insane mussies again.
Let it stand as East Berlin did for decades as a symbol of a lost war. I saw East Berlin in 1970, and I was shocked at the standing destruction, no pun intended. But I do not blame the Russians for leaving it as it was. Leave the rubble where it falls.