What Netanyahu promised Obama, that is something we never will know! Because there will be two versions, the only common they will have is that in both versions it will confirm each leaders point of view of what was agreed. Both leaders are cornered by their earlier statement in this question and they can't afford to start a new path.
19-year-old construction worker seriously injured after falling from scaffolding in Harish (Haaretz)
from the article: MESS Report / What exactly did Netanyahu promise Obama?