Stephen M. Walt asks an important question:
One does not need to look far down the road to see the point where a two-state solution will no longer be a practical possibility. What will the United States do then? What will American policy be when it makes no sense to talk about a two-state solution, because Israel effectively controls all of what we used to call Mandate Palestine? What vision will President Obama and Secretary Clinton have for the Palestinians and for Israel when they can no longer invoke the two-state mantra?
What needs to happen – the forced removal of the settlements – seems surreal at this point. A bi-national option seems equally unlikely. What then?