Ineteresting Israeli article on this week's events
http://www.timesofisrael.com/?p=740978
I do not know anything about the source, but the conclusions can be taken on their own merits. From all sources, it is clear that the tensions are high and there are huge disagreements.
Given that you have people in Netanyahu's party who are far from what a realistic solution has to be - including a deputy defense minister who actually spoke of not wanting to speak of "Jewish settlements on the West Bank", but rather Palestinian enclaves in Israel (!) and Palestinians who want not just a state on the 67 borders with East Jerusalem as its capitol, but the right to return for Palestinians granted in the part that remains Israel, it would be no surprise that IF the negotiators start to reach a successful conclusion that BOTH extremes would try to sink it. (This is not to say that there are signs that anything is near - just pointing out that some on both sides STILL think they are better off not negotiating now - thinking time is on their side.)