Transfer the Muslim squatters out and then your problem is solved without need of building a “ huge subterranean wall” —( and to hell with the Muslim murder gangs- all of them !)
And so I assume you want to toss the Palestinian Christian squatters out too because they are not “Jewish”? Where does it end as the Zionist state does not distinguish between Christians and Muslims where it pertains to Palestinian residents, in Gaza or the West Bank, they, the Christians as well as the Muslims, are all squatters in the eyes of the Zionist state.