The world would create a temporary unified army like what was done in the Gulf Wars. They would then give Israel an edict to evict all the Israeli settlers from the West Bank and East Jerusalem by a set time.
If the Israelis failed to act in time, then the army would go in and enforce the 1967 borders, then leave the UN forces to manage and maintain the borders and order.
It wouldn't be pretty, and there could be some death and destruction during the process, but it could be the best solution over the long run.
There are only three other possible solutions that I can see:
1) Status Quo: Endless series of tit-for-tat assaults
2) Israel/Palestine Cage Match: No outside countries allowed to assist. Whoever wins, gets everything.
3) WWIII
Well it’s possible things could work out that way. I just remember the struggle they had removing the settlers from Gaza - removing them all from the West Bank will be even harder. Then there are the security concerns. It’s going to be extremely difficult resolving any of this in a way acceptable to both sides.
Lunacy. The creation of the jihdadist rebel state "Kosovo" in the heart of Europe was despicable enough. But Israel IS the only Jewish state, the historical lands of the Jews for 4000 years.
Jews in the so-called "west bank" are not "settlers." There is no "East Jersusalem." The Arabs there came in with the Jordanian invasion and annexation of the "west bank" in 1948, and kicked 190,000 Jews from their homes in Judea and Samaria and Jerusalem, and barred Jews from even worshipping at the remnant of their Temple. The Arab mosques on the Temple Mount are a historical abomination, part of the most brutal colonizers in World history - with only Spain/Portugal, Israel and India managing to liberate themselves from the monstrous barbarism of Islam.
Israel would use every nuke in its arsenal to prevent what the scumbag Russian puppet Sachs is proposing. And they would be right to do so.
I have a better idea. Kill the terrorists, and things work themselves out.