Nothing is "viable" if you just extrapolate the present, except I guess genocide.
To take a step back, moral ambition and political courage are necessary. If Ireland could reach a Good Friday Agreement, if South Africa could overcome apartheid, so can Palestine/Israel.
A plurinational democratic state with equal rights for all, with a truth and reconciliation process, and with strong international support is the only way the middle east can ever reach peace.
And if we are putting on big boy pants and imagining a better world, why not envision the Mediterranean Union becoming a force for democratization and stabilization allowing the free movement of people throughout the region.
When realism is dystopian, fuck realism and pick utopia. Otherwise, why even live?