That's why I acknowledge the need for a middle period of two-states which would need to work together to peacefully coexist. Dom brought this up once and I never really considered the leap beyond just two states based against each other on something like religion.
As for a timeline, who knows?
Seems like it would take a big shift in the attitudes of most of the major countries and powers in the world. Seems everyone with any sway is behind Israel and only Israel.