Irreconcilable differences is what will end the current peace talks. The PLO insistence that Israel self destruct and Israel's insistence that Israel continues as a secure Jewish state will not allow talks to continue. The PLO promotes it's phased plan to destroy Israel and Israel fights for the civil rights of Jews to live in peace and security. The two agendas are incompatible, and thus irreconcilable.
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)