Turning off the water at the start was horrible - it was purely motivated by vengeance and spite rather than any legitimate military or political objective
So you have an underground weapons cache that has just been collapsed by a bomb. You know roughly where to dig and how far down to dig to recover the weapons from your cache. However you have a problem. Even if you could use traditional heavy machinery (excavators, skid steer etc) without getting detected or could gather enough men with shovels to get there quick, you can't risk using metal implements to dig down there once you get close. One "ting" and you could trigger a chain of explosions that kills your men and collapses the still functional parts of the tunnel near it. Heck depending on the size of the cache and the design of the tunnel networks in that section, it might even set the next cache of weapons off (an actual problem. Hamas has been having).
So how do you dig? With pressurized water!. Add a common sump pump a hose and an outlet once you've got close and use the power if water to blast the dirt and rock away. Recover your ammunition safely to be used against the infidels!
Common access to water in sufficient pressure is a key building tool for tunnelling.
Polling suggests that Palestinians support Hamas over Fatah 53% to 14% as of last year. If there were an election today, Hamas would take over the West Bank and retain control of Gaza.
In the primaries maybe, but not in the General.