This particular israeli cabinet has shown itself quite willing to discuss and negotiate some very sensitive issues, i.e. status of East Jerusalem, etc, as long as these discussions are with palestinians with valid nationalist credentials. But since the essential point for Israel must be an agreement which does not compromise the security of the nation, this israeli cabinet cannot ignore the power of islamic terrorist groups within the palestinian community. The most powerful of these islamicist groups is Hamas, but Islamic Jihad, PRC, and others need to be considered. If the palestinian nationalists want any signicant concessions from israeli cabinet, the security considerations of these islamicist groups need to be addressed, and as long as the palestinian people remain uncommited to the destruction of these groups, this or any other israeli cabinet is limited in the extent of concessions that they can offer without unacceptable compromise of the the nation's security.
Saudi FM: We hope Iran uses sanction relief for development, not nefarious activities (Reuters)
from the article: You can learn it in a negotiations course