Those "preconditions", -specifically the requirement to stop all Settlement construction and demolish illegal outposts, are Israel's obligations from the Road Map peace agreement. So if Israel's word on a peace agreement document is worthless, what good is signing another one? Force will be applied on Israel by the outside world, and it will be unbearably painful for the Israeli economy. Heads are gonna roll.
Motorcyclist in his 20s dies after crashing near Gedera (Haaretz)