They are still arguing over who owns the area, and the two groups have come to blows many times. Many have died, more have been injured, and still more live in fear.
So, the UN has decided that they will call for an end to the violence. Too many people have died and there has been too much civilian suffering.
It reminds me of a problem at many workplaces. A CEO was once asked, "Can we make sure people always fill up the coffee maker when they've had the last cup?" "You can't ask people to have good intentions," he said. The fact is, people are sometimes going to leave the coffee maker empty unless they have a damn good reason to fill it up. Sure, nice people will fill it up when they're done, and more likely, if they aren't in a hurry, but unless there's a mechanism in place, you're still just relying on the fact that they're nice and that they'll feel like doing it.
Meanwhile, back in the Middle East, we are asking people to stop doing what they were doing because it's wrong. Fact. They know it's wrong (and maybe some don't even think that it is), and they're doing it anyway. Palestinians attack and Israelis retaliate with increased force, but the fighting does not stop. Missiles are still flying into Southern Israel. Tanks are still firing in Gaza city. The violence is horrible. Hundreds have died. Perhaps we should give them a bit more of a reason to stop than just asking nicely.