The more Israel is part of the solution as opoosed to part of the problem, the more chances are that a Palestinian state is not kidnapped by Iran. The more the USA, Europe and soi-dissant "moderate Arab states" are involved (before, during or after their tyrants fall) the better for all. Israel should see that it is in its best interest to negotiate, and same is true for Palestinians. Settlement outposts must be frozen during negotiations, and afterwards, they must only be undertaken in Israel proper.
27 injured in fire, explosion at former air raid shelter in Hamburg, Germany (DPA)
from the article: Palestinians to U.S.: Revive peace talks before we establish state