If the Israelis can get commitments/understandings/preconditions from the mediators of the negotiations (americans) in return for a temporary tactical freeze to settlement construction then that is nearly as good as getting the same commitments from the other side. Extract the maximum commitments possible from the Americans, freeze settlements temporarily, enter negotiations with the opening position safely supported by the mediators and argue on the minor points. If the other side walks away you look like the good guys. Continued settlement activity at this point is unlikely to have a material impact on the outcome of negotiations anyway. The partition map of the West Bank is pretty much obvious at this point, the only thing in dispute is where Israel will need to compensate the Palestinians for the concessions made in changing the 1967 borders in the West Bank...
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from the article: ANALYSIS / The settlement freeze only hindered negotiations