One it is recognized that a Palestinian state is useful and inevitable then the conversation can shift to security for both states. That is the contribution the U.S. can make. In a short time technicalities like borders will seem trivial. When the security of a country is mainly in it's borders it has no security.
German accused of joining ISIS in Syria deported by Turkey (AP)
from the article: Deputy PM: Israel must cede land to remain Jewish and democratic